This is…

Opening Screen

Chapter 2:Graphs & Equations

Question Board

Math JeopardyLinear

Equations

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Linear Models

Abs. Value/ Inequality

Graphs

DirectVariation

Function? (empty)

$100

Write a perpendicular line toy = ¼ x + 6

Category 1 – 10 Point Question

$100

y = - 4x ± Cy = - 4x ± C

Category 1 – 10 Point Answer

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Write the equation of a line parallel to y = 3x + ½

going through point (3 , 2).

y = 3x - 7 y = 3x - 7

$200Category 1 – 20 Point Answer

Write in slope-intercept form of the equation of the line through points

(3,4) and (0,5)

Category 1 – 30 Point Question

$300

Find slope then use point slope: y- y₁ = m(x-x₁)

y = ⅓ x + 5

Find slope then use point slope: y- y₁ = m(x-x₁)

y = ⅓ x + 5

Category 1 – 30 Point Answer

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Given the point (2, 3), write an equation whose slope is zero

and another whose slope is undefined.

Category 1 – 40 Point Question

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x = 2; vertical liney = 3; horizontal line

x = 2; vertical liney = 3; horizontal line

Category 1 – 40 Point Answer

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Write the standard formula for a linear equation.

What do each of the lettersin the formula represent?

Category 1 – 50 Point Question

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Ax + By = C

A & B = coefficients and A is a positive integer

x & y = variablesC = constant

Ax + By = C

A & B = coefficients and A is a positive integer

x & y = variablesC = constant

Category 1 – 50 Point Answer

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When a linear regression linepasses through quadrants

III and I, is it increasing (positive) or decreasing (negative)?

Category 2 – 10 Point Question

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Increasing positivelyIncreasing positively

Category 2 – 10 Point Answer

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What is the equation of the line that best fits this data?

Category 2 – 20 Point Question

$200X Y

1985 5

1987 12

1989 19

1991 28

y = 3.8x + 4.6 y = 3.8x + 4.6

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Given the data below, what should the window of your calculator be?

Category 2 – 30 Point Question

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X Y

0 2

4 11

-3 -1

10 19

1 7

Window:Xmin: -3Xmax: 10Ymin: -1Ymax: 19

Window:Xmin: -3Xmax: 10Ymin: -1Ymax: 19

Category 2 – 30 Point Answer

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Susie Smart wants to know how longit will take to pay off her loan for her trip to Puerto Rico. What are the independent

and dependent variables? When willthe trip be paid off?

Category 2 – 40 Point Question

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Independent: timeDependent: cost $$

At the x-intercept it will be paid off.

Independent: timeDependent: cost $$

At the x-intercept it will be paid off.

Category 2 – 40 Point Answer

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Given the linear regression line: y = .5x - 4.25

predict the value of the independent variable when the dependent variable

is 11.75.

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Independent variable, x = 32 Independent variable, x = 32

Category 2 – 50 Point Answer

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Describe the graph of y= - |x| - 2

(include vertex)

Category 3 – 10 Point Question

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Upside down V-shaped with vertex on (0 , -2)

Shift down 2

Upside down V-shaped with vertex on (0 , -2)

Shift down 2

Category 3 – 10 Point Answer

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Category 3 – 20 Point Question

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Write the equation of the graph to the left.

y = |x - 4| + 2y = |x - 4| + 2

Category 3 – 20 Point Answer

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Draw the graph ofy > 3x – 6

(shade answer)

Category 3 – 30 Point Question

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Category 3 – 30 Point Answer

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Describe in words the graph ofy = - |x + 1| - 3

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V shape upside downShifted to the left by 1

Shifted down by 3Vertex (-1 , -3)

V shape upside downShifted to the left by 1

Shifted down by 3Vertex (-1 , -3)

Category 3 – 40 Point Answer

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Draw and shade the graphy ≤ |x + 3| - 1

Category 3 – 50 Point Question

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Category 3 – 50 Point Answer

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Is this a direct variation?y – 4x = 0

If so, write the equation.

Category 4 – 10 Point Question

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Yesy = 4xYes

y = 4x

Category 4 – 10 Point Answer

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Is this a direct variation? If so, write the equation and value of k.

Category 4 – 20 Point Question

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3

2

x

y

Yesy = ⅔ xk = ⅔

Yesy = ⅔ xk = ⅔

Category 4 – 20 Point Answer

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If y = 9 when x = 3, find x, when y = 12.

Category 4 – 30 Point Question

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x = 4x = 4

Category 4 – 30 Point Answer

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Write an equation for a direct variationwith a graph that passes through point

(-9, -27).

Category 4 – 40 Point Question

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y = 3xy = 3x

Category 4 – 40 Point Answer

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If y = -4 when x = ½, find ywhen x = ⅔.

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y = -5.3y = -5.3

Category 4 – 50 Point Answer

$500

Category 5 – 10 Point Question

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What is the definition of a function and draw an example graph of a function?

A function is a relation in which each element of the

domain is paired with exactly one element in

the range. (x-coordinate not repeating)

A function is a relation in which each element of the

domain is paired with exactly one element in

the range. (x-coordinate not repeating)

Category 5 – 10 Point Answer

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Is x = 3 a function?

Category 5 – 20 Point Answer

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No, Vertical line

Category 5 – 30 Point Question

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Is 2x² + 4 a function? What is the domain and the range?

Category 5 – 30 Point Answer

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Yes, parabola

D: All Reals

R: y ≥ 4

Is - |x - 2| + 12 a function?

What is the domain and the range?

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Yes, upside down V-shapedD: All Reals

R: y ≤ 12

Yes, upside down V-shapedD: All Reals

R: y ≤ 12

Category 5 – 40 Point Answer

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Is x² + y² = 4a function?

Bonus:What is the domain and range?

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No, a circle

Bonus:D: -2 ≤ x ≤ 2R: -2 ≤ y ≤ 2

No, a circle

Bonus:D: -2 ≤ x ≤ 2R: -2 ≤ y ≤ 2

Category 5 – 50 Point Answer

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What team won the Duke vs. UNCMen’s basketball game last night?

Category 6 – 10 Point Question

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DukeDuke

Category 6 – 10 Point Answer

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Where did Ms. Jarvis go to collegefor her undergraduate degree?

Category 6 – 20 Point Question

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Meredith CollegeMeredith College

Category 6 – 20 Point Answer

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Who are the Democraticand Republican nominees

for President and Vice President?

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Barack Obama - DJoe Biden - VP

John McCain - RSarah Palin - VP

Barack Obama - DJoe Biden - VP

John McCain - RSarah Palin - VP

Category 6 – 30 Point Answer

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Name the October and November SAT test dates.

Category 6 – 40 Point Question$400

October 4th

November 1st October 4th

November 1st

Category 6 – 40 Point Answer

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Why does taking the square rootof y² = y. Work it out mathematically.

$500

Category 6 – 50 Point Answer

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yyyyy

y

12/22/122

2/1

)(

y

If f(x) = -x² - 1 and g(x) = 2x +5

Find a) f(4) and b) g(f(x))

Final Jeopardy Question

Final Jeopardy

a) f(4) = -17b) -2x² + 3

a) f(4) = -17b) -2x² + 3

Final Jeopardy Answer

Final Jeopardy

Final Jeopardy Help

Final Jeopardy

Nice Try.

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