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Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsPreviewPreview
7-1: The Coordinate Plane
7-2: Functions
7-3: Graphing Linear Equations
7-4: Graphing Quadratic Equations
7-5: Cubic Functions
7-6: Rate of Change and Slope
7-7: Finding Slope of a Line
7-8: Interpreting Graphs
7-9: Direct Variation
Lesson Quizzes
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-1 The Coordinate Plane
Lesson Quiz: Part I
Give the coordinates of each point and identify the quadrant that contains each point.
1. A (–2, 4); II2. B (3, –2); IV3. C (2, 3); I
Plot each point on a coordinate plane.
4. D (2, –3)
5. E (–4, –2)
B
AC
x
y
–2
–2
2
2–4
–4
4
4
–1–3–5 531
1
3
5
0
–3
–5
–1
DE
Holt CA Course 2
1-1 Evaluating Algebraic Expressions
Lesson Quiz: Part II
6. To plot (7, –2) a student started at (0, 0) and moved 7 units left and 2 units down. What did the student do wrong?
He should have moved 7 units right.
7-1 The Coordinate Plane
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-2 Functions
Lesson Quiz: Part I
Find the output for each input: –2, 0, 2.
1. y = 3x + 3
2. y = –x2
–3, 3, 9
–4, 0, –4
Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsLesson Quiz: Part Il
Determine if each relationship represents a function.
3.
4.
no
nox
y
2
2
-2
-2-4 4
4
-4
7-2 Functions
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-3 Graphing Linear Functions
Lesson Quiz: Part I
Graph the linear functions.
1. y = 3x – 4
2. y = –x + 4
3. y = 2
y = 3x – 4
y = –x +4
y = 2
Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsLesson Quiz: Part II
4. The temperature of a liquid is decreasing at a rate of 12°F per hour. Susan begins measuring the liquid at 200°F. Write a linear function that describes the change in temperature over time. Then make a graph to show the temperature over 5 hours.
y = 200 – 12xy
200
180
160
140
120
0 1 2 3 4 5
7-3 Graphing Linear Functions
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-4 Graphing Quadratic Functions
Lesson Quiz: Part ICreate a table for the quadratic function, and use it to make a graph.
1. y = x2 – 2
Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsLesson Quiz: Part II
Create a table for each quadratic function, and use it to make a graph.
2. y = x2 + x – 6
7-4 Graphing Quadratic Functions
Holt CA Course 2
1-1 Evaluating Algebraic Expressions
Lesson Quiz: Part III
3. The function y = 40t – 5t2 gives the height of
an arrow in meters t seconds after it is shot
upward. What is the height of the arrow after 5
seconds?
75 m
7-4 Graphing Quadratic Functions
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-5 Cubic Functions
Lesson Quiz: Part ICreate a table for each cubic function, and use it to graph the function.
1. y = – x3
2. y = x3 – 3
1 2
Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsLesson Quiz: Part Il
Tell whether each function is linear, quadratic, or cubic.
3.
4.
5.
quadratic
cubic
linear
7-5 Cubic Functions
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-6 Rate of Change and Slope
Lesson Quiz: Part I
Determine whether the rates of change are constant or variable.
1.
2.
variable
x –1 1 2 4 8
y 2 6 8 10 14
x 1 3 4 5 7
y 0 2 3 4 6
constant
Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsLesson Quiz: Part II
3. Find the slope of the line.
3
4. Find the value of a.
–4
7-6 Rate of Change and Slope
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-7 Finding Slope of a Line
Lesson Quiz: Part I
Find the slope of the line that passes through each pair of points.
1. (4, 3) and (–1, 1)
2. (–1, 5) and (4, 2)
25
53–
Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsLesson Quiz: Part II
3. The table shows how much money Susan earned as a house painter for one afternoon. Use the data to make a graph. Find the slope of the line and explain what it shows.
x
y
64 2 8 10 12 14 0
10
20
30
40
50
60
7080
The slope of the line is 7. This means Susan earned $7 for each hour worked.
7-7 Finding Slope of a Line
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-8 Interpreting Graphs
Lesson Quiz: Part I1. A ball is tossed into the air. Which graph best
shows this?
a. b.
a
Ele
vati
on
Time
Ele
vati
on
Time
Holt CA Course 2
1-1 Evaluating Algebraic ExpressionsLesson Quiz: Part II
2. Sam in-line skated 1000 m from his home to the park, where he rested on a bench. He then returned home. Sketch a graph to show the distance he in-line skated compared to time.
Dis
tan
ce (
m)
500
1,000
1,500
Time
7-8 Interpreting Graphs
Holt CA Course 2
1-1 Evaluating Algebraic Expressions7-9 Direct Variation
Lesson Quiz: Part I
Determine whether the data sets show direct variation.
1.
2.
direct variation
Amount of Water in a Rain Gauge
Time (h) 1 2 3 4 5
Rain (in) 2 4 6 8 10
Driving Time
Speed (mi/h) 30 40 50 60 80
Time (h) 10 7.5 6 5 3.75
no direct variation
Holt CA Course 2
1-1 Evaluating Algebraic Expressions
Lesson Quiz: Part II
3. Roy’s income varies directly with the number
of dogs that he walks. He earned $8.50 for
walking 2 dogs. Write a direct variation
function for this situation. If Roy walks 5 dogs,
how much will he earn?
y = 4.25x; $21.25
7-9 Direct Variation
