Name: Class: Math 8 Chapter 3 Sobieraj Online Individual TEst
Indicate the answer choice that best completes the statement or answers the question.
1. What is the constant rate of change between the values of x and y in the table?
a. b. c. d. 2. What is the slope of the line that passes through the points C(–2, 4) and D(1, –1)?
a. b. c. d. 3. What are the slope and y-intercept for the graph of y + 9x = –6?
a. slope: 9, y-intercept: –6
b. slope: –6, y-intercept: 9
c. slope: –9, y-intercept: –6
d. slope: –6, y-intercept: –9
Date: Name: Class: Date: Math 8 Chapter 3 Sobieraj Online Individual TEst
4. What is the equation in slope-intercept form for the graph of the line shown?
a. y = –2x – 1
b. y = –2x + 1
c. y = 2x – 1
d. y = 2x + 1
5. Alice is having her birthday party at a game center. The center charges $100 plus $20 per guest. The total cost
of the party y can be represented by the equation y = 20x + 100. What does the y-intercept represent?
a. the number of guests
b. the cost to rent the game center
c. the cost per guest
d. Alice’s age
6. Which equation, in point-slope form, passes through (–2, 4) and has a slope of 3?
a. y – 4 = 3(x – 2)
b. y – 4 = 3(x + 2)
c. y + 4 = 3(x – 2)
d. y + 4 = 3(x + 2)
7. What are the x- and y-intercepts for the graph of 4x – 3y = 24?
a. x-intercept: –8, y-intercept: 6
b. x-intercept: –6, y-intercept: 8
c. x-intercept: 6, y-intercept: –8
d. x-intercept: 8, y-intercept: -6
Name: Class: Date: Math 8 Chapter 3 Sobieraj Online Individual TEst
Find the constant rate of change for each graph.
8. a. $1.00 per candy
b. $0.50 per candy
c. $2.00 per candy
d. $0.25 per candy
9. The table shows the relationship between the wait time in minutes and the number of people in line.
People in Line
Number
Wait Time (min.)
5
20
10
40
15
60
20
80
What is the constant rate of change?
a. 5 minutes per person
b. 8 people per minute
c. 4 minutes per person
d. 20 people per minute
Find the slope of the line that passes through each pair of points.
10. A(–2, –1), B(–1, 1)
a. b. c. d. Name: Class: Date: Math 8 Chapter 3 Sobieraj Online Individual TEst
11. Find the slope of the line.
a. b. c. d. 12. The amount of money that Justin earns is directly proportional to the number of hours that he works. How much
does Justin earn per hour?
a. $0.50 per hour
b. $12 per hour
c. $7 per hour
d. $6 per hour
Graph each equation using the slope and the y-intercept.
Name: Class: Math 8 Chapter 3 Sobieraj Online Individual TEst
13. y = x + 3
a. b. c. Date: Name: Class: Math 8 Chapter 3 Sobieraj Online Individual TEst
d. Date: Name: Class: Date: Math 8 Chapter 3 Sobieraj Online Individual TEst
14. Use the x- and y-intercepts to graph the function a. b. c. d. .
Name: Class: Date: Math 8 Chapter 3 Sobieraj Online Individual TEst
Write an equation of the line in slope-intercept form that passes through each point with the given slope.
15. (0, –9), slope = 4
a. y = –4x – 9
b. y = 4x – 9
c. y = 4x + 10
d. y = 4x + 9
Write each equation in standard form.
16. y – 8 = –3(x – 6)
a. 3x – y = 26
b. y = –3x + 26
c. 3x + y = 26
d. 3x + y = 10
17. Find the slope of the line.
a. b. c. d. Name: Math 8 Chapter 3 Sobieraj Online Individual TEst
Answer Key
1. d
2. a
3. c
4. a
5. b
6. b
7. c
8. b
9. c
10. c
11. d
12. d
13. a
14. a
15. b
16. c
17. b
Class: Date: