229
Algebra, Functions, and Data Analysis Vocabulary Word Wall Cards Mathematics vocabulary word wall cards provide a display of mathematics content words and associated visual cues to assist in vocabulary development. The cards should be used as an instructional tool for teachers and then as a reference for all students. Table of Contents Expressions and Operations Real Numbers Complex Numbers Complex Number (examples) Absolute Value Order of Operations Expression Variable Coefficient Term Scientific Notation Exponential Form Negative Exponent Zero Exponent Product of Powers Property Power of a Power Property Power of a Product Property Quotient of Powers Property Power of a Quotient Property Polynomial Degree of Polynomial Leading Coefficient Add Polynomials (group like terms) Add Polynomials (align like terms) Subtract Polynomials (group like terms) Subtract Polynomials (align like terms) Multiply Binomials Multiply Polynomials Multiply Binomials (model) Multiply Binomials (graphic organizer) Multiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common factor) Factoring (perfect square trinomials) Factoring (difference of squares) Difference of Squares (model) Factoring (sum and difference of cubes) Factor by Grouping Divide Polynomials (monomial divisor) Divide Polynomials (binomial divisor) Prime Polynomial Square Root Virginia Department of Education 2018Algebra II Mathematics Vocabulary

Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Embed Size (px)

Citation preview

Page 1: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Algebra Functions and Data AnalysisVocabulary Word Wall Cards

Mathematics vocabulary word wall cards provide a display of mathematics content words and associated visual cues to assist in vocabulary development The cards should be used as an instructional tool for teachers

and then as a reference for all students

Table of Contents

Expressions and OperationsReal NumbersComplex Numbers Complex Number (examples)Absolute ValueOrder of OperationsExpressionVariableCoefficientTermScientific NotationExponential FormNegative ExponentZero ExponentProduct of Powers PropertyPower of a Power PropertyPower of a Product PropertyQuotient of Powers PropertyPower of a Quotient PropertyPolynomialDegree of PolynomialLeading CoefficientAdd Polynomials (group like terms)Add Polynomials (align like terms)Subtract Polynomials (group like terms)Subtract Polynomials (align like terms)Multiply BinomialsMultiply PolynomialsMultiply Binomials (model)Multiply Binomials (graphic organizer)Multiply Binomials (squaring a binomial)Multiply Binomials (sum and difference)Factors of a MonomialFactoring (greatest common factor)Factoring (perfect square trinomials)

Factoring (difference of squares)Difference of Squares (model)Factoring (sum and difference of cubes)Factor by GroupingDivide Polynomials (monomial divisor)Divide Polynomials (binomial divisor)Prime PolynomialSquare RootCube Rootn th Root Simplify Radical ExpressionsAdd and Subtract Radical ExpressionsProduct Property of RadicalsQuotient Property of Radicals

Equations and InequalitiesZero Product PropertySolutions or RootsZerosx-InterceptsCoordinate PlaneLiteral EquationVertical LineHorizontal LineQuadratic Equation (solve by factoring and

graphing)Quadratic Equation (number of solutions)InequalityGraph of an InequalityTransitive Property for InequalityAdditionSubtraction Property of InequalityMultiplication Property of InequalityDivision Property of InequalityLinear Equation (standard form)Linear Equation (slope intercept form)

Virginia Department of Education 2018 Algebra II Mathematics Vocabulary

Linear Equation (point-slope form)Equivalent Forms of a Linear EquationSlopeSlope FormulaSlopes of LinesPerpendicular LinesParallel LinesMathematical NotationSystem of Linear Equations (graphing)System of Linear Equations (substitution)System of Linear Equations (elimination)System of Linear Equations (number of solutions)Graphing Linear InequalitiesSystem of Linear InequalitiesLinear ProgrammingDependent and Independent VariableDependent and Independent Variable (application)Graph of a Quadratic EquationVertex of a Quadratic FunctionQuadratic Formula

Relations and FunctionsRelations (definition and examples)Functions (definition) Function (example)DomainRangeFunction NotationEnd BehaviorIncreasingDecreasingExtremaParent Functions

Linear Quadratic Exponential Logarithmic

Transformations of Parent Functions Translation Reflection Dilation

Linear Function (transformational graphing) Translation Dilation (mgt0) Dilationreflection (mlt0)

Quadratic Function (transformational graphing) Vertical translation Horizontal translation Dilation (agt0) Dilationreflection (alt0)

Arithmetic SequenceGeometric Sequence

StatisticsProbabilityProbability of Independent EventsProbability of Dependent EventsProbability (mutually exclusive events)Fundamental Counting PrinciplePermutationPermutation (formula)CombinationCombination (formula)Statistics NotationMeanMedianModeSummationVarianceStandard Deviation (definition)Standard Deviation (graphic)z-Score (definition)z-Score (graphic)Empirical RuleElements within One Standard Deviation of the

Mean (graphic)ScatterplotPositive Linear Relationship (Correlation)Negative Linear Relationship (Correlation)No CorrelationCurve of Best Fit (linear)Curve of Best Fit (quadratic)Curve of Best Fit (exponential)Outlier Data (graphic )

Virginia Department of Education 2018 Algebra II Mathematics Vocabulary

Real NumbersThe set of all rational and irrational

numbers

Natural Numbers 1 2 3 4 hellip

Whole Numbers 0 1 2 3 4 hellip

Integers hellip -3 -2 -1 0 1 2 3 hellip

Rational Numbers

the set of all numbers that can be written as the ratio of two integers

with a non-zero denominator (eg 23

5 -5 03 radic16 137 )

Irrational Numbersthe set of all nonrepeating nonterminating decimals

(eg radic7 π -23223222322223hellip)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 1

Complex Numbers

The set of all real andimaginary numbers

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 2

Real NumbersImaginary Numbers

Complex Number(Examples)

a plusmn b i

a and b are real numbers and i = radic1

A complex number consists of both real (a) and imaginary (bi) but either

part can be 0

Case Examples

a = 0-i 001i

b = 0 radic5 4 -128

a ne 0 b ne 0 39 ndash 6i -2 + πi

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 3

Absolute Value

|5| = 5 |-5| = 5

The distance between a numberand zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 4

5 units 5 units

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

Order of Operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 5

Grouping Symbols

Exponents an

MultiplicationDivision

Left to Right

AdditionSubtraction

Left to Right

( ) radic

|| [ ]

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 2: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear Equation (point-slope form)Equivalent Forms of a Linear EquationSlopeSlope FormulaSlopes of LinesPerpendicular LinesParallel LinesMathematical NotationSystem of Linear Equations (graphing)System of Linear Equations (substitution)System of Linear Equations (elimination)System of Linear Equations (number of solutions)Graphing Linear InequalitiesSystem of Linear InequalitiesLinear ProgrammingDependent and Independent VariableDependent and Independent Variable (application)Graph of a Quadratic EquationVertex of a Quadratic FunctionQuadratic Formula

Relations and FunctionsRelations (definition and examples)Functions (definition) Function (example)DomainRangeFunction NotationEnd BehaviorIncreasingDecreasingExtremaParent Functions

Linear Quadratic Exponential Logarithmic

Transformations of Parent Functions Translation Reflection Dilation

Linear Function (transformational graphing) Translation Dilation (mgt0) Dilationreflection (mlt0)

Quadratic Function (transformational graphing) Vertical translation Horizontal translation Dilation (agt0) Dilationreflection (alt0)

Arithmetic SequenceGeometric Sequence

StatisticsProbabilityProbability of Independent EventsProbability of Dependent EventsProbability (mutually exclusive events)Fundamental Counting PrinciplePermutationPermutation (formula)CombinationCombination (formula)Statistics NotationMeanMedianModeSummationVarianceStandard Deviation (definition)Standard Deviation (graphic)z-Score (definition)z-Score (graphic)Empirical RuleElements within One Standard Deviation of the

Mean (graphic)ScatterplotPositive Linear Relationship (Correlation)Negative Linear Relationship (Correlation)No CorrelationCurve of Best Fit (linear)Curve of Best Fit (quadratic)Curve of Best Fit (exponential)Outlier Data (graphic )

Virginia Department of Education 2018 Algebra II Mathematics Vocabulary

Real NumbersThe set of all rational and irrational

numbers

Natural Numbers 1 2 3 4 hellip

Whole Numbers 0 1 2 3 4 hellip

Integers hellip -3 -2 -1 0 1 2 3 hellip

Rational Numbers

the set of all numbers that can be written as the ratio of two integers

with a non-zero denominator (eg 23

5 -5 03 radic16 137 )

Irrational Numbersthe set of all nonrepeating nonterminating decimals

(eg radic7 π -23223222322223hellip)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 1

Complex Numbers

The set of all real andimaginary numbers

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 2

Real NumbersImaginary Numbers

Complex Number(Examples)

a plusmn b i

a and b are real numbers and i = radic1

A complex number consists of both real (a) and imaginary (bi) but either

part can be 0

Case Examples

a = 0-i 001i

b = 0 radic5 4 -128

a ne 0 b ne 0 39 ndash 6i -2 + πi

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 3

Absolute Value

|5| = 5 |-5| = 5

The distance between a numberand zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 4

5 units 5 units

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

Order of Operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 5

Grouping Symbols

Exponents an

MultiplicationDivision

Left to Right

AdditionSubtraction

Left to Right

( ) radic

|| [ ]

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 3: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Real NumbersThe set of all rational and irrational

numbers

Natural Numbers 1 2 3 4 hellip

Whole Numbers 0 1 2 3 4 hellip

Integers hellip -3 -2 -1 0 1 2 3 hellip

Rational Numbers

the set of all numbers that can be written as the ratio of two integers

with a non-zero denominator (eg 23

5 -5 03 radic16 137 )

Irrational Numbersthe set of all nonrepeating nonterminating decimals

(eg radic7 π -23223222322223hellip)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 1

Complex Numbers

The set of all real andimaginary numbers

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 2

Real NumbersImaginary Numbers

Complex Number(Examples)

a plusmn b i

a and b are real numbers and i = radic1

A complex number consists of both real (a) and imaginary (bi) but either

part can be 0

Case Examples

a = 0-i 001i

b = 0 radic5 4 -128

a ne 0 b ne 0 39 ndash 6i -2 + πi

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 3

Absolute Value

|5| = 5 |-5| = 5

The distance between a numberand zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 4

5 units 5 units

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

Order of Operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 5

Grouping Symbols

Exponents an

MultiplicationDivision

Left to Right

AdditionSubtraction

Left to Right

( ) radic

|| [ ]

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 4: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Complex Numbers

The set of all real andimaginary numbers

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 2

Real NumbersImaginary Numbers

Complex Number(Examples)

a plusmn b i

a and b are real numbers and i = radic1

A complex number consists of both real (a) and imaginary (bi) but either

part can be 0

Case Examples

a = 0-i 001i

b = 0 radic5 4 -128

a ne 0 b ne 0 39 ndash 6i -2 + πi

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 3

Absolute Value

|5| = 5 |-5| = 5

The distance between a numberand zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 4

5 units 5 units

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

Order of Operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 5

Grouping Symbols

Exponents an

MultiplicationDivision

Left to Right

AdditionSubtraction

Left to Right

( ) radic

|| [ ]

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 5: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Complex Number(Examples)

a plusmn b i

a and b are real numbers and i = radic1

A complex number consists of both real (a) and imaginary (bi) but either

part can be 0

Case Examples

a = 0-i 001i

b = 0 radic5 4 -128

a ne 0 b ne 0 39 ndash 6i -2 + πi

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 3

Absolute Value

|5| = 5 |-5| = 5

The distance between a numberand zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 4

5 units 5 units

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

Order of Operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 5

Grouping Symbols

Exponents an

MultiplicationDivision

Left to Right

AdditionSubtraction

Left to Right

( ) radic

|| [ ]

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 6: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Absolute Value

|5| = 5 |-5| = 5

The distance between a numberand zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 4

5 units 5 units

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6

Order of Operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 5

Grouping Symbols

Exponents an

MultiplicationDivision

Left to Right

AdditionSubtraction

Left to Right

( ) radic

|| [ ]

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 7: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Order of Operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 5

Grouping Symbols

Exponents an

MultiplicationDivision

Left to Right

AdditionSubtraction

Left to Right

( ) radic

|| [ ]

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 8: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

ExpressionA representation of a quantity that may contain numbers variables or

operation symbolsx

3(y + 39)4 ndash 89

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 6

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 9: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Variable

9 + log x = 208

d = 7c - 5

A = r 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 7

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 10: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Coefficient

(-4) + 2 log x

23 ab ndash 1

2

πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 8

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 11: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Term3 log x + 2y ndash 8

3 terms

-5x2 ndash x

2 terms

1 term

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 9

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 12: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Scientific Notationa x 10n

1 le | a | lt 10 and n is an integer

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 10

ExamplesStandard Notation Scientific Notation

17500000 175 x 107

-84623 -84623 x 104

00000026 26 x 10-6

-0080029 -80029 x 10-2

(43 x 105) (2 x 10-2) (43 x 2) (105 x 10-2) =86 x 105+(-2) = 86 x 103

66times106

2times103

662times 106

103 =33times106minus3=33times103

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 13: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Exponential Form

an = a a a a∙ ∙ ∙ hellip a0

Examples

2 2 2 = 2∙ ∙ 3 = 8

n ∙ n ∙ n ∙ n = n4 3 3 3 x x = 3∙ ∙ ∙ ∙ 3x2 =

27x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 11

base

n factors

exponent

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 14: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Negative Exponent

a-n = 1an a 0

Examples

4-2 = 142 = 1

16

x4

y-2 = x4

1y2 = x4

1∙ y

2

1 = x4 y2

(2 ndash a)-2 = 1(2 ndash a )2 ane2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 12

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 15: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Zero Exponenta0 = 1 a 0

Examples

(-5)0 = 1

(3x + 2)0 = 1

(x2y-5z8)0 = 1

4m0 = 4 1 = 4∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 13

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 16: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Product of Powers Property

am ∙ an = am + n

Examples

x4 ∙ x2 = x4+2 = x6

a3 ∙ a = a3+1 = a4

w7 ∙ w-4 = w7 + (-4) = w3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 14

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 17: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Power of a Power Property

(am)n = am middot n

Examples

(y4)2 = y4∙2 = y8

(g2)-3 = g2∙(-3) = g-6 = 1g6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 15

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 18: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Power of a Product Property

(ab)m = am bm

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 16

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 19: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quotient of Powers Property

am

an = am ndash n a 0

Examples

x6

x5 = x6 ndash 5 = x1 = xy-3

y-5= y-3 ndash (-5 ) = y2

a4

a4 = a4-4 = a0 = 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 17

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 20: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Power of Quotient Property

(ab )m= am

bm b0

Examples

(y3 )

4= y4

34 = y81

(5t )-3= 5-3

t-3 = 1

53

1t 3

= 153∙t3

1 = t3

53 = t3

125

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 18

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 21: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Polynomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 19

Nonexample Reason

5mn ndash 8 variable exponent

n-3 + 9 negative exponent

Example Name Terms7

6x monomial 1 term

3t ndash 112xy3 + 5x4y binomial 2 terms

2x2 + 3x ndash 7 trinomial 3 terms

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 22: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Degree of a Polynomial

The largest exponent or the largest sum of exponents of a term within a

polynomial

Leading CoefficientVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 20

Polynomial Degree of Each Term

Degree of Polynomial

-7m3n5 -7m3n5 rarr degree 8 8

2x + 3 2x rarr degree 13 rarr degree 0 1

6a3 + 3a2b3 ndash 216a3 rarr degree 3

3a2b3 rarr degree 5-21 rarr degree 0

5

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 23: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

The coefficient of the first term of a polynomial written in descending

order of exponents

Examples

7a3 ndash 2a2 + 8a ndash 1

-3n3 + 7n2 ndash 4n + 10

16t ndash 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 21

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 24: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Add Polynomials(Group Like Terms ndash Horizontal Method)

Example

(2g2 + 6g ndash 4) + (g2 ndash g)

= 2g2 + 6g ndash 4 + g2 ndash g

= (2g2 + g2) + (6g ndash g) ndash 4

3g2 + 5g ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 22

(Group like terms and add)

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 25: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Add Polynomials(Align Like Terms ndash

Vertical Method) Example

(2g3 + 6g2 ndash 4) + (g3 ndash g ndash 3)

2g3 + 6g2 ndash 4 + g3 ndash g ndash 3

3g3 + 6g2 ndash g ndash 7

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 23

(Align like terms and add)

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 26: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Subtract Polynomials

(Group Like Terms - Horizontal Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Add the inverse)

= (4x2 + 5) + (2x2 ndash 4x +7)= 4x2 + 5 + 2x2 ndash 4x + 7

(Group like terms and add)

= (4x2 + 2x2) ndash 4x + (5 + 7)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 24

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 27: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 25

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 28: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Subtract Polynomials(Align Like Terms -Vertical Method)

Example

(4x2 + 5) ndash (-2x2 + 4x -7)

(Align like terms then add the inverse and add the like terms)

4x2 + 5 4x2 + 5ndash(-2x2 + 4x ndash 7) + 2x2 ndash 4x + 7

6x2 ndash 4x + 12

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 26

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 29: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Multiply BinomialsApply the distributive property

(a + b)(c + d) = a(c + d) + b(c + d) =ac + ad + bc + bd

Example (x + 3)(x + 2)

= (x + 3)(x + 2)= x(x + 2) + 3(x + 2)= x2 + 2x + 3x + 6= x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 27

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 30: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Multiply PolynomialsApply the distributive property

(a + b)(d + e + f)

(a + b)( d + e + f )

= a(d + e + f) + b(d + e + f)

= ad + ae + af + bd + be + bf

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 28

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 31: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Multiply Binomials(Model)

Apply the distributive property

Example (x + 3)(x + 2)

x2 + 2x + 3x + 6 = x2 + 5x + 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 29

x + 2

x + 3

x2 =

Key

x =

1 =

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 32: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Multiply Binomials(Graphic Organizer)

Apply the distributive property

Example (x + 8)(2x ndash 3) = (x + 8)(2x + -3)

2x2 + 16x + -3x + -24 = 2x2 + 13x ndash 24

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 30

2x + -3x + 8

2x2 -3x

16x -24

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 33: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Multiply Binomials(Squaring a Binomial)

(a + b)2 = a2 + 2ab + b2

(a ndash b)2 = a2 ndash 2ab + b2

Examples

(3m + n)2 = 9m2 + 2(3m)(n) + n2

= 9m2 + 6mn + n2

(y ndash 5)2 = y2 ndash 2(5)(y) + 25 = y2 ndash 10y + 25

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 31

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 34: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Multiply Binomials(Sum and Difference)

(a + b)(a ndash b) = a2 ndash b2

Examples

(2b + 5)(2b ndash 5) = 4b2 ndash 25

(7 ndash w)(7 + w) = 49 ndash w2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 32

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 35: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Factors of a Monomial

The number(s) andor variable(s) that are multiplied together to form a monomial

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 33

Examples Factors Expanded Form

5b2 5∙b2 5∙b∙b

6x2y 6∙x2∙y 2 3∙ ∙x x∙ ∙y

-5 p2 q3

2-52 ∙p2∙q3

12 middot(-

5)∙p p∙ ∙q q q∙ ∙

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 36: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Factoring(Greatest Common Factor)

Find the greatest common factor (GCF) of all terms of the polynomial and then apply the

distributive property

Example 20a4 + 8a

2 2 5 ∙ ∙ ∙ a a a a∙ ∙ ∙ + 2 2 2 ∙ ∙ ∙ a

GCF = 2 2 a∙ ∙ = 4a

20a4 + 8a = 4a(5a3 + 2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 34

common factors

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 37: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Factoring(Perfect Square Trinomials)

a2 + 2ab + b2 = (a + b)2

a2 ndash 2ab + b2 = (a ndash b)2

Examples x2 + 6x +9 = x2 + 2 3∙ ∙x +32

= (x + 3)2

4x2 ndash 20x + 25 = (2x)2 ndash 2 2∙ x 5 + 5∙ 2

= (2x ndash 5)2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 35

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 38: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Factoring(Difference of Squares)

a2 ndash b2 = (a + b)(a ndash b)

Examples x2 ndash 49 = x2 ndash 72 = (x + 7)(x ndash 7)

4 ndash n2 = 22 ndash n2 = (2 ndash n) (2 + n)

9x2 ndash 25y2 = (3x)2 ndash (5y)2

= (3x + 5y)(3x ndash 5y)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 36

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 39: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Difference of Squares(Model)

a2 ndash b2 = (a + b)(a ndash b)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 37

(a + b)(a ndash b)b

a

a

b

a2 ndash b2

a(a ndash b) + b(a ndash b)

a ndash

a ndash

a

b

a ndash

a + b

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 40: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Factoring(Sum and Difference of

Cubes)

a3 + b3 = (a + b)(a2 ndash ab + b2)a3 ndash b3 = (a ndash b)(a2 + ab + b2)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 38

27y3 + 1 = (3y)3 + (1)3

= (3y + 1)(9y2 ndash 3y + 1)

x3 ndash 64 = x3 ndash 43 = (x ndash 4)(x2 + 4x + 16)

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 41: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Factoring (By Grouping)

For trinomials of the forma x2+bx+c

Example 3 x2+8 x+4

3 x2+2 x+6 x+4

(3 x2+2x )+(6 x+4)

x (3 x+2)+2(3 x+2)

(3 x+2)(x+2)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 39

ac = 3 4 = 12Find factors of ac that add to equal b

12 = 2 6 2 + 6 = 8

Rewrite 8 x as 2 x + 6 x

Group factors

Factor out a common binomial

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 42: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Divide Polynomials(Monomial Divisor)

Divide each term of the dividend by the monomial divisor

Example

(12x3 ndash 36x2 + 16x) 4x= 12 x3 ndash 36 x 2 + 16 x

4 x

= 12 x3

4 x ndash 36 x2

4 x + 16 x4 x

3x2 ndash 9x + 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 40

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 43: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Divide Polynomials (Binomial Divisor)

Factor and simplifyExample

(7w2 + 3w ndash 4) (w + 1)= 7 w 2 + 3 w ndash 4

w + 1

= (7 w ndash 4 ) ( w + 1)w + 1

7w ndash 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 41

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 44: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Prime PolynomialCannot be factored into a product of

lesser degree polynomial factors

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 42

Exampler

3t + 9x2 + 1

5y2 ndash 4y + 3

Nonexample Factorsx2 ndash 4 (x + 2)(x ndash 2)

3x2 ndash 3x + 6 3(x + 1)(x ndash 2)x3 xsdotx2

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 45: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Square Rootradicx2

Simplify square root expressionsExamples

radic9 x2 = radic32 ∙ x2 = radic(3x)2 = 3x

-radic( x ndash 3)2 = -(x ndash 3) = -x + 3

Squaring a number and taking a square root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 43

radicand or argument radical symbol

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 46: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Cube Root3radicx3

Simplify cube root expressionsExamples

3radic64 = 3radic43 = 43radic-27 = 3radic(-3)3 = -3

3radicx3 = x

Cubing a number and taking a cube root are inverse operations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 44

radical symbol radicand or argument

index

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 47: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

nth Rootnradicxm= x

mn

Examples

5radic64 = 5radic43 = 435

6radic729 x9 y6 = 3x

32 y

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 45

index

radical symbol radicand or argument

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 48: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Simplify Radical Expressions Simplify radicals and combine like terms

where possibleExamples

12+ 3radicminus32minus11

2minusradic8=minus10

2minus2 3radic4minus2radic2=minus5minus2 3radic4minus2radic2

radic18minus2 3radic27=2radic3minus2 (3 )iquest2radic3minus6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 46

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 49: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Add and Subtract Radical Expressions

Add or subtract the numerical factors of the like radicals

Examples

2radica+5radicaiquest (2+5 ) radica=7 radica

6 3radic xyminus4 3radic xyminus3radic xyiquest (6minus4minus1 ) 3radic xy=3radic xy

2 4radicc+7 radic2minus2 4radicc=(2minus2 ) 4radicc+7radic2=7 radic2

Product Property of Radicals

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 47

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 50: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

The nth root of a product equals the product of the nth roots

nradicab=nradica ∙ nradicb

a ge 0 and b ge 0

Examplesradic4 x = radic4 ∙ radicx= 2radicx

radic5a3 = radic5 ∙ radica3 = aradic5a

3radic16= 3radic8∙2 = 3radic8 ∙ 3radic2 = 23radic2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 48

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 51: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quotient Propertyof Radicals

The nth root of a quotient equals the quotient of the nth roots of the numerator

and denominatornradic ab=

nradicanradicb

a ge 0 and b ˃ 0

Examples

radic5y2 = radic5

radicy2 = radic5y y ne 0

radic25radic3

= 5radic3∙ radic3radic3

=5radic33

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 49

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 52: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Zero Product Property

If ab = 0then a = 0 or b = 0

Example(x + 3)(x ndash 4) = 0

(x + 3) = 0 or (x ndash 4) = 0x = -3 or x = 4

The solutions or roots of the polynomial equation are -3 and 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 50

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 53: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Solutions or Rootsx2 + 2x = 3

Solve using the zero product property

x2 + 2x ndash 3 = 0(x + 3)(x ndash 1) = 0

x + 3 = 0 or x ndash 1 = 0x = -3 or x = 1

The solutions or roots of the polynomial equation are -3 and 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 51

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 54: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Zeros The zeros of a function f(x) are the values of

x where the function is equal to zero

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 52

f(x) = x2 + 2x ndash 3Find f(x) = 0

0 = x2 + 2x ndash 30 = (x + 3)(x ndash 1)

x = -3 or x = 1

The zeros of a function are also the solutions or roots of the related equation

The zeros of the function f(x) = x2 + 2x ndash 3 are -3 and 1 and are located at the

x-intercepts (-30) and (10)

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 55: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

x-InterceptsThe x-intercepts of a graph are located where the graph crosses the x-axis and

where f(x) = 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 53

f(x) = x2 + 2x ndash 3

0 = (x + 3)(x ndash 1)0 = x + 3 or 0 = x ndash 1

x = -3 or x = 1

The zeros are -3 and 1The x-intercepts are

-3 or (-30) 1 or (10)

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 56: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Coordinate Plane

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 54

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 57: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Literal EquationA formula or equation that consists

primarily of variables

Examples

Ax + By = C

A = 12

bh

V = lwh

F = 95 C + 32

A = πr2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 55

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 58: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Vertical Line

x = a (where a can be any real number)

Example x = -4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 56

-5 -4 -3 -2 -1 0 1 2 3

-4

-3

-2

-1

0

1

2

3

4

Vertical lines have undefined slope

y

x

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 59: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Horizontal Line

y = c(where c can be any real number)

Example y = 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 57

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

Horizontal lines have a slope of 0

x

y

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 60: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quadratic Equationax2 + bx + c = 0

a 0

Example x2 ndash 6x + 8 = 0Solve by factoring Solve by graphing

x2 ndash 6x + 8 = 0

(x ndash 2)(x ndash 4) = 0

(x ndash 2) = 0 or (x ndash 4) = 0

x = 2 or x = 4

Graph the related function f(x) = x2 ndash 6x + 8

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 58

Solutions (roots) to the equation are 2 and 4 the x-coordinates where the function crosses the

x-axis

y

x

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 61: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quadratic Equation (NumberType of Solutions)

ax2 + bx + c = 0 a 0

ExamplesGraph of

the related function

Number and Type of

SolutionsRoots

x2 ndash x = 3 2 Real roots

x2 + 16 = 8x1 distinct Real root

with a multiplicity of two

2x2 ndash 2x + 3 = 00 Real roots2 Complex

roots

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 59

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 62: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

InequalityAn algebraic sentence comparing two

quantities

Symbol Meaning

lt less than less than or equal to greater than greater than or equal to not equal to

Examples-105 ˃ -99 ndash 12

8 gt 3t + 2

x ndash 5y -12

r 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 60

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 63: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Graph of an Inequality

Symbol Examples Graph

lt x lt 3

-3 y

t -2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 61

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 64: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Transitive Property of Inequality

If Thena b and b c a ca b and b c a c

Examples If 4x 2y and 2y 16

then 4x 16

If x y ndash 1 and y ndash 1 3 then x 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 62

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 65: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

AdditionSubtraction Property of Inequality

If Thena gt b a + c gt b + ca b a + c b + ca lt b a + c lt b + ca b a + c b + c

Exampled ndash 19 -87

d ndash 19 + 19 -87 + 19d -68

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 63

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 66: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Multiplication Property of Inequality

If Case Then a lt b c gt 0 positive ac lt bca gt b c gt 0 positive ac gt bca lt b c lt 0 negative ac gt bca gt b c lt 0 negative ac lt bc

Example If c = -25 gt -3

5(-2) lt -3(-2)-10 lt 6

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 64

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 67: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Division Property of Inequality

If Case Then

a lt b c gt 0 positive ac lt b

c

a gt b c gt 0 positive ac gt b

c

a lt b c lt 0 negative ac gt b

c

a gt b c lt 0 negative ac lt b

c

Example If c = -4-90 -4t

-90-4 -4 t

-4

225 t

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 65

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 68: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Absolute Value Inequalities

Absolute Value Inequality

Equivalent Compound Inequality

ldquoandrdquo statement

ldquoorrdquo statement

Example

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 66

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 69: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear Equation (Standard Form)

Ax + By = C(A B and C are integers A and B cannot both equal

zero)

Example

-2x + y = -3

The graph of the linear equation is a straight line and represents all solutions (x y) of the equation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 67

-3 -2 -1 0 1 2 3 4 5

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

x

y

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 70: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear Equation (Slope-Intercept Form)

y = mx + b(slope is m and y-intercept is b)

Example y = - 43 x + 5

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 68

3

-4

(05)m = -4

3

b = 5

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 71: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear Equation(Point-Slope Form)

y ndash y1 = m(x ndash x1)where m is the slope and (x1y1) is the point

Example Write an equation for the line that passes through the point (-41) and has a slope of 2

y ndash 1 = 2(x ndash -4)y ndash 1 = 2(x + 4)

y = 2x + 9

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 69

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 72: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Equivalent Forms of a Linear Equation

Forms of a Linear Equation

3 y=2 ndash 4 x

Slope-Intercept y = minus43x+2

Point-Slope yminus (minus2 )=minus43

( xminus3)

Standard 4 x+3 y=2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 70

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 73: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

SlopeA number that represents the rate of change

in y for a unit change in x

The slope indicates the steepness of a line

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 71

2

3

Slope = 23

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 74: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Slope Formula The ratio of vertical change to

horizontal change

slope = m =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 72

y

x

y2 ndash y1

x2 ndash x1

(x2 y2)

(x1 y1)

B

A

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 75: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Slopes of Lines

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 73

Line phas a positive slope

Line n has a negative

slope

Vertical line s has an undefined slope

Horizontal line t has a zero slope

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 76: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Perpendicular LinesLines that intersect to form a right angle

Perpendicular lines (not parallel to either of the axes) have slopes whose

product is -1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 74

Example The slope of line n = -2 The slope of line p = 1

2 -2 ∙ 1

2 = -1 therefore n is perpendicular to p

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 77: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Parallel LinesLines in the same plane that do not intersect

are parallelParallel lines have the same slopes

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 75

Example The slope of line a = -2 The slope of line b = -2

-2 = -2 therefore a is parallel to b

ab

x

y

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 78: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Mathematical Notation

Equation or Inequality Set Notation Interval Notation

0 lt x 3 x|0ltx le3 (0 3]

y ge -5 y y ge -5 [-5 +infin)

zlt-1 or z ge 3 z| zlt-1 or z ge 3 (-infin -1)cupiquest3 +infin iquest

x lt 5 or x gt 5 x x 5 (-infin 5iquestcupiquest +infin iquest

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 76

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 79: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

System of Linear Equations(Graphing)-x + 2y = 32x + y = 4

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 77

The solution (1 2) is the

only ordered pair that

satisfies both equations (the point of intersection)

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 80: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

System of Linear Equations

(Substitution)x + 4y = 17y = x ndash 2

Substitute x ndash 2 for y in the first equation

x + 4(x ndash 2) = 17

x = 5

Now substitute 5 for x in the second equation

y = 5 ndash 2

y = 3

The solution to the linear system is (5 3)

the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 78

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 81: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

System of Linear Equations(Elimination)

-5x ndash 6y = 85x + 2y = 4

Add or subtract the equations to eliminate one variable -5x ndash 6y = 8+ 5x + 2y = 4

-4y = 12 y = -3

Now substitute -3 for y in either original equation to find the value of x the eliminated variable

-5x ndash 6(-3) = 8 x = 2

The solution to the linear system is (2-3) the ordered pair that satisfies both equations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 79

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 82: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

System of Linear Equations

(Number of Solutions)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 80

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 83: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Graphing Linear Inequalities

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 81

Number of Solutions

Slopes and y-intercepts

Graph

One solution Different slopes

No solutionSame slope and

different -intercepts

Infinitely many

solutions

Same slope andsame y-

intercepts

Object 55

x

y

x

y

x

y

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 84: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

x

x

System of Linear Inequalities

Solve by graphingVirginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 82

Example Graph

y x + 2

y gt -x ndash 1

y

y

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 85: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

x

y x ndash 3y -2x + 3

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 83

The solution region contains all ordered pairs that are solutions to both inequalities in the system

(-11) is one solution to the system located in the solution region

y

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 86: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear ProgrammingAn optimization process consisting of a system of constraints and an objective quantity that can be

maximized or minimized ExampleFind the minimum and maximum value of the objective function C = 4x + 5y subject to the following constraintsx 0y 0x + y 6

The maximum or minimum value for C = 4x + 5y will occur at a corner point of the feasible region

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 84

feasible region

(06)

(00)

(60)

x + y 6

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 87: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Example

y = 2x + 7

Dependent andIndependent Variable

x independent variable(input values or domain set)

y dependent variable(output values or range set)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 85

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 88: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Dependent andIndependent Variable

(Application)Determine the distance a car will

travel going 55 mph

d = 55h

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 86

independent dependenth d0 01 552 1103 165

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 89: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Graph of a Quadratic Equation

y = ax2 + bx + ca 0

Example y = x2 + 2x ndash 3

The graph of the quadratic equation is a curve (parabola) with one line of symmetry and one vertex

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 87

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

12

13y

x

line of symmetry

vertex

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 90: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Vertex of a Quadratic Function

For a given quadratic y = ax2+ bx + c the vertex (h k) is found by computing

h =minusb2a and then evaluating y at h to find k

Example y=x2+2 xminus8

h=minusb2a

= minus22(1)

=minus1

k=(minus1 )2+2 (minus1 )minus8

iquestminus9

The vertex is (-1-9)

Line of symmetry is x=hx=minus1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 88

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 91: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quadratic Formula Used to find the solutions to any quadratic

equation of the form f(x) = ax2 + bx + c

x = - b plusmnradicb2 - 4 ac 2 a

Example g(x )=2 x2minus4 xminus3

x=minus(minus4 )plusmnradic(minus4 )2minus4 (2 ) (minus3 )2 (2 )

x=2+radic102

2minusradic102

RelationA set of ordered pairs

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 89

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 92: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Examples

x y

-3 40 01 -62 25 -1

(04) (03) (02) (01)Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 90

Example 1

Example 2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 93: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 91

Example 3

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 94: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Function

(Definition)A relationship between two quantities in which every input corresponds to exactly one output

A relation is a function if and only if each element in the domain is paired with a unique

element of the range

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 92

2

4

6

8

10

10

7

5

3

xdomain

yrange

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 95: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Functions(Examples)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 93

(-34) (03) (12) (46)

y

x

Example 1

Example 2

Example 3

Example 4

x y3 22 40 2-1 2

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 96: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Domain the set of all possible values of the

independent variable Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 94

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The domain of f(x) is all real numbers

f(x)

x

The domain of g(x) is -2 -1 0 1

input outputx g(x)-2 0-1 10 21 3

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 97: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Rangethe set of all possible values of the

dependent variable

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 95

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 yf(x)

-4 -3 -2 -1 0 1 2 3 4

-2

-1

0

1

2

3

4

5

6

7

8

9

10 y

The range of f(x) is all real numbers greater than or equal to zero

f(x)

x

The range of g(x) is 0 1 2 3

input outputx g(x)-2 0-1 10 21 3

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 98: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Function Notation f(x)

f(x) is read ldquothe value of f at xrdquo or ldquof of xrdquo

Examplef(x) = -3x + 5 find f(2)f(2) = -3(2) + 5f(2) = -6

Letters other than f can be used to name functions eg g(x) and h(x)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 96

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 99: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

End BehaviorThe value of a function as x approaches positive or

negative infinity

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 97

f(x) approaches +infin as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

f(x) approaches 0 as the values of x approach minusinfin

f(x) is approaches +infin as the values of x approach +infin

-6 -5 -4 -3 -2 -1 0 1 2 3 4

-5-4-3-2-10123456789

10111213

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 100: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Increasing Decreasing

A function can be described as increasing decreasing or constant over a specified

interval or the entire domain Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 98

y

f(x) is decreasing over the entire domain because the values of f(x) decrease as the values of x increase

f(x) is decreasing over x|minusinfinltxlt0 because the values of f(x) decrease as the values of x increase f(x) is increasing over x|0ltxlt+infin because the values of f(x) increase as the values of x increase

f(x) is constant over the entire domain because the values of f(x) remain constant as the values of x increase

y

x

y

x

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 101: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Absolute ExtremaThe largest (maximum) and smallest (minimum)

value of a function on the entire domain of a function (the absolute or global extrema)

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 99

A function f has an absolute maximum located at x = a if f(a) is the largest value of f over its domain

A function f has an absolute minimum located at x = a if f(a) is the smallest value of f over its domain

absolute minimum

y

y

x

x

absolute maximum

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 102: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Parent Functions(Linear Quadratic)

Linear

f(x) = x

Quadratic

f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 100

x

y

x

y

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 103: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Parent Functions(Exponential Logarithmic)

Exponential

f(x) = bx

b gt 1

Logarithmic

f(x) = log b x

b gt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 101

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 104: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Transformations of Parent Functions

(Translation)Parent functions can be transformed to

create other members in a family of graphs

Tran

slatio

ns

g(x) = f(x) + kis the graph of f(x) translated

vertically ndash

k units up when k gt 0

k units down when k lt 0

g(x) = f(x minus h)is the graph of f(x) translated horizontally ndash

h units right when h gt 0

h units left when h lt 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 102

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 105: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Transformations of Parent Functions

(Reflection)Parent functions can be transformed to

create other members in a family of graphs

Refle

ction

s g(x) = -f(x)is the graph of

f(x) ndashreflected over the x-axis

g(x) = f(-x)is the graph of

f(x) ndashreflected over the y-axis

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 103

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 106: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Transformations of Parent Functions

(Dilations)Parent functions can be transformed to

create other members in a family of graphs

Dila

tions

g(x) = a middot f(x)is the graph of

f(x) ndash

vertical dilation (stretch) if a gt 1

vertical dilation (compression) if 0 lt a lt 1

g(x) = f(ax)is the graph of

f(x) ndash

horizontal dilation (compression) if a gt 1

horizontal dilation (stretch) if 0 lt a lt 1

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 104

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 107: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear Function(Transformational Graphing)

Translationg(x) = x + b

Vertical translation of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 105

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

Examplesf(x) = xt(x) = x + 4h(x) = x ndash 2

y

x

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 108: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear Function(Transformational Graphing)

Dilation (mgt0)g(x) = mx

Vertical dilation (stretch or compression) of the parent function f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 106

-4 -3 -2 -1 0 1 2 3 4

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

Examplesf(x) = xt(x) = 2xh(x) = 1

2x

y

x

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 109: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Linear Function

(Transformational Graphing)DilationReflection (mlt0)

g(x) = mx

Vertical dilation (stretch or compression) with a

reflection of f(x) = x

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 107

Examplesf(x) = xt(x) = -xh(x) = -3xd(x) = -1

3x

y

x

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 110: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quadratic Function(Transformational Graphing)

Vertical Translationh(x) = x2 + c

Vertical translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 108

-4 -3 -2 -1 0 1 2 3 4

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

10

11

Examplesf(x) = x2

g(x) = x2 + 2t(x) = x2 ndash 3

y

x

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 111: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quadratic Function(Transformational Graphing)

Horizontal Translation

h(x) = (x + c)2

Horizontal translation of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 109

Examplesf(x) = x2

g(x) = (x + 2)2

t(x) = (x ndash 3)2

-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7-1

0

1

2

3

4

5

6

7

8

9y

x

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 112: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quadratic Function(Transformational Graphing)

Dilation (agt0)h(x) = ax2

Vertical dilation (stretch or compression) of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 110

-5 -4 -3 -2 -1 0 1 2 3 4 5

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = 2x2

t(x) = 13x2

y

x

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 113: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Quadratic Function(Transformational Graphing)

DilationReflection (alt0)h(x) = ax2

Vertical dilation (stretch or compression) with a reflection of f(x) = x2

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 111

-5 -4 -3 -2 -1 0 1 2 3 4 5

-9

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

4

5

6

7

8

9

Examples f(x) = x2

g(x) = -2x2

t(x) = -13 x2

y

x

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 114: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Arithmetic SequenceA sequence of numbers that has a common difference between every two consecutive

terms

Example -4 1 6 11 16 hellip

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 112

-1 0 1 2 3 4 5 6

-5

0

5

10

15

20 y

x

The common difference is the slope of the line of best fit

common difference

5

15

1

+5+5 +5+5

Positionx

Termy

1 -42 13 64 115 16

+5

+5

+5

+5

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 115: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Geometric Sequence

A sequence of numbers in which each term after the first term is obtained by multiplying

the previous term by a constant ratio

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 113

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 116: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

ProbabilityThe likelihood of an event occurring

Probability of an event = number of favorable outcomesnumber of possible outcomes

Example What is the probability of drawing an A from the bag of letters shown

P(A) = 37

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 114

A C CA B A B

0 12 1

37

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 117: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Probability of Independent Events

Example

P(green and yellow) =P(green) ∙ P(yellow) = 3

8∙14 = 3

32

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 115

What is the probability of landing on green on the first

spin and then landing on yellow on

the second spin

G

GG

YY B

BB

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 118: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Probability of Dependent EventsExample

P(red and blue) =

P(red) ∙ P(blue|red) =

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 116

BP

Y

G

RRBP

Y

GRR

Candy JarWhat is the probability of selecting a red jelly bean

on the first pick and without replacing it

selecting a blue jelly bean on the second pick

ldquoblue after redrdquo

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 119: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Probability(Mutually Exclusive)

Events that cannot occur at the same time

Examples1 A Tossing a coin and getting heads

B Tossing a coin and getting tails

2 A Turning leftB Turning right

P (AandB )=iquest 0

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 117

If two events are mutually exclusive then the probability of them both occurring at the same time is 0

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 120: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Fundamental Counting Principle

If there are m ways for one event to occur and n ways for a second event to occur then there are m∙n ways for both events to

occur

Example How many outfits can Joey make using

3 pairs of pants and 4 shirts

3 4 = 12 outfits∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 118

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 121: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

PermutationAn ordered arrangement of a group

of objects

is different from

Both arrangements are included in possible outcomes

Example5 people to fill 3 chairs (order matters) How many ways can the chairs be filled

1st chair ndash 5 people to choose from2nd chair ndash 4 people to choose from3rd chair ndash 3 people to choose from

possible arrangements are 5 4 3 = 60∙ ∙

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 119

3rd 2nd1st 3rd 2nd 1st

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 122: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Permutation(Formula)

To calculate the number of permutations

n and r are positive integers n ge r and n is the total number of elements in the set and r is the

number to be ordered

Example There are 30 cars in a car race The first- second- and third-place finishers win a prize

How many different arrangements (order matters)of the first three positions are possible

30P3 = 30(30-3) = 30

27 = 24360

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 120

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 123: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

CombinationThe number of possible ways to select or

arrange objects when there is no repetition and order does not matter

Example If Sam chooses 2 selections from triangle square circle and pentagon How many different combinations are possible

Order (position) does not matter so is the same as

There are 6 possible combinations

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 121

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 124: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Combination(Formula)

To calculate the number of possible combinations using a formula

n and r are positive integers n ge r and n is the total number of elements in the set and r is the number

to be ordered

Example In a class of 24 students how many ways can a group of 4 students be

arranged (order does not matter)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 122

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 125: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Statistics Notation

Symbol Representationx i ith element in a data set μ mean of the data set σ 2 variance of the data set

σstandard deviation of the data set

nnumber of elements in the data set

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 123

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 126: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

MeanA measure of central tendency

Example Find the mean of the given data set

Data set 0 2 3 7 8

Balance Point

Numerical Average

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 124

0 1 2 3 4 5 6 7 8

132

4 4

μ=0+2+3+7+85

=205

=4

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 127: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

MedianA measure of central tendency

Examples Find the median of the given data sets

Data set 6 7 8 9 9

The median is 8

Data set 5 6 8 9 11 12

The median is 85

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 125

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 128: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

ModeA measure of central tendency

Examples

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 126

Data Sets Mode

3 4 6 6 6 6 10 11 14 6

0 3 4 5 6 7 9 10 none

52 52 52 56 58 59 60 52

1 1 2 5 6 7 7 9 11 12 1 7bimodal

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 129: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Summation

This expression means sum the values of x starting at x1 and ending at xn

Example Given the data set 3 4 5 5 10 17sumi=1

6

x i=3 + 4 + 5 + 5 + 10 + 17 = 44

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 127

stopping pointupper limit

starting pointlower limit

index of summation

typical elementsummation sign

= x1 + x2 + x3 + hellip + xn

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 130: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

VarianceA measure of the spread of a data set

The mean of the squares of the differences between each element and the mean of

the data set

Note The square root of the variance is equal to the standard deviation

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 128

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 131: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Standard Deviation(Definition)

A measure of the spread of a data set

The square root of the mean of the squares of the differences between each element and the mean of the data set or

the square root of the variance

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 129

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 132: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Standard Deviation(Graphic)

A measure of the spread of a data set

Comparison of two distributions with same mean () and different standard deviation () values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 130

Smallerσ Largerσ

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 133: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

z-Score(Definition)

The number of standard deviations an element is away from the mean

where x is an element of the data set μ is the mean of the data set and σ is the standard deviation of the

data set

Example Data set A has a mean of 83 and a standard deviation of 974 What is the z score for ‐the element 91 in data set A

z = 91-83974 = 0821

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 131

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 134: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

z-Score(Graphic)

The number of standard deviations an element is from the mean

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 132

z = 0z = -3 z = -2 z = -1 z = 3z = 2z = 1

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 135: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Empirical Rule

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 133

Normal Distribution Empirical Rule (68-95-997 rule) ndash approximate percentage of element distribution

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 136: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Elements within One Standard Deviation (σ) of the Mean (micro)

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 134

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 137: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

ScatterplotGraphical representation of

the relationship between two numerical sets of data

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 135

y

x

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 138: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Positive Linear Relationship (Correlation)

In general a relationship where the dependent (y) values increase as independent values (x) increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 136

y

x

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 139: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Negative Linear Relationship (Correlation)

In general a relationship where the dependent (y) values decrease

as independent (x) values increase

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 137

y

x

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 140: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

No Correlation

No relationship between the dependent (y) values and independent (x) values

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 138

y

x

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 141: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Curve of Best Fit(Linear)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 139

Equation of Curve of Best Fity = 11731x + 19385

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 142: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Curve of Best Fit(Quadratic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 140

Equation of Curve of Best Fity = -001x2 + 07x + 6

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 143: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Curve of Best Fit(Exponential)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 141

Bacteria Growth Over Time

Equation of Curve of Best Fit

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)
Page 144: Algebra II Vocabulary Word Wall Cards · Web viewMultiply Binomials (squaring a binomial) Multiply Binomials (sum and difference) Factors of a Monomial Factoring (greatest common

Outlier Data

(Graphic)

Virginia Department of Education 2018 AFDA Mathematics Vocabulary ndash Card 142

  • Complex Numbers
  • Complex Number
  • Absolute Value
  • Order of Operations
  • Expression
  • Variable
  • Coefficient
  • Term
  • Scientific Notation
  • Exponential Form
  • Negative Exponent
  • Zero Exponent
  • Product of Powers Property
  • Power of a Power Property
  • Power of a Product Property
  • Power of Quotient Property
  • = = = ∙ = =
  • Polynomial
  • Degree of a Polynomial
  • Leading Coefficient
  • Add Polynomials
  • Add Polynomials
  • 3g3 + 6g2 ndash g ndash 7
  • Subtract Polynomials
  • Multiply Binomials
  • Multiply Polynomials
  • Multiply Binomials
  • Multiply Binomials
  • Multiply Binomials
  • (Sum and Difference)
  • Factors of a Monomial
  • Factoring
  • (Greatest Common Factor)
  • Factoring
  • (Perfect Square Trinomials)
  • Factoring
  • (Difference of Squares)
  • Difference of Squares
  • Factoring
  • (Sum and Difference of Cubes)
  • Factoring
  • (By Grouping)
  • Example
  • Divide Polynomials
  • Divide Polynomials (Binomial Divisor)
  • Prime Polynomial
  • Square Root
  • Cube Root
  • nth Root
  • Simplify Radical Expressions
  • Add and Subtract Radical Expressions
  • Product Property of Radicals
  • Quotient Property
  • Zero Product Property
  • Solutions or Roots
  • Zeros
  • x-Intercepts
  • Coordinate Plane
  • Literal Equation
  • A = πr2
  • Quadratic Equation (NumberType of Solutions)
  • Inequality
  • Graph of an Inequality
  • Transitive Property of Inequality
  • AdditionSubtraction Property of Inequality
  • d -68
  • -10 lt 6
  • Absolute Value Inequalities
  • Linear Equation (Standard Form)
  • The graph of the linear equation is a straight line and represents all solutions (x y) of the equation
  • Linear Equation (Slope-Intercept Form)
  • Linear Equation
  • (Point-Slope Form)
  • Equivalent Forms of a Linear Equation
  • Slope
  • Slope Formula
  • Slopes of Lines
  • Perpendicular Lines
  • Parallel Lines
  • Mathematical Notation
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • System of Linear Equations
  • Graphing Linear Inequalities
  • System of Linear Inequalities
  • Linear Programming
  • Dependent and
  • Independent Variable
  • Dependent and
  • Independent Variable
  • Graph of a Quadratic Equation
  • Relation
  • Functions
  • Domain
  • Range
  • Function Notation
  • End Behavior
  • Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Transformations of Parent Functions
  • Linear Function
  • Linear Function
  • Vertical dilation (stretch or compression) of the parent function f(x) = x
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x
  • Vertical translation of f(x) = x2
  • Quadratic Function
  • Vertical dilation (stretch or compression) of f(x) = x2
  • Vertical dilation (stretch or compression) with a reflection of f(x) = x2
  • Arithmetic Sequence
  • Probability
  • Probability of Independent Events
  • P(green) ∙ P(yellow) = =
  • Probability
  • Fundamental Counting Principle
  • Permutation
  • Permutation
  • Combination
  • Combination
  • Statistics Notation
  • Mean
  • Median
  • Mode
  • Summation
  • Variance
  • Standard Deviation
  • Standard Deviation
  • z-Score
  • z-Score
  • Empirical Rule
  • Scatterplot
  • Positive Linear Relationship (Correlation)
  • Negative Linear Relationship (Correlation)
  • No Correlation
  • Curve of Best Fit
  • Curve of Best Fit
  • Curve of Best Fit
  • (Graphic)