Pre-Algebra II Chapter 8 Practice Test - Comcast.net

Pre-Algebra II Chapter 8 Practice Test
Calculate the slope using the two points and the formula.
1. (1, 2) and (2, 7)
2. (4, -9) and (-6, -12)
3. (1, 3) and (-1, -2)
Identify the slope and y-intercept from the given equations.
4. y = 5x + 2
5. y = 1 x - 4
3
6. y = x + 6
Find the solutions of each equation for: x = -2, -1, and 1.
Write as ordered pairs! (x, y)
7. y = x + 5
8. y = 1 x + 3
2
9. y = 3x - 2
Is the ordered pair a solution to the equation? (yes or no)
10. 4x – 3y = 6 (0, -2)
11. 4x – 3y = 6 (2, 3)
12. 4x – 3y = 6 (-3, -2)
Is each relation a function? (yes or no)
13. (-2, -12) (2, 0) (-3, 4) (3, 5)
14. (1, 1) (-2, 1) (-2, 2) (4, 1)
15. (1, 4) (1, 5) (1, -1) (1, -2)

Graph the following equations on your answer sheet.
16. y = 2x - 3
17. y = -1 x + 2
4
18. y = -3x - 3
Is there a positive, a negative, or no correlation in the scatter plot?
19. ..
.
.
. .
.
. .
Would you expect a positive, negative, or no correlation between the two sets of
data?
20. students’ test scores and their homework grade

Answers
1. 5
2. 3/10
3. 5/2
4. m = 5; b = 2
5. m = 1/3; b = -4
6. m = 1; b = 6
7. (-2, 3) (-1, 4) (1, 6)
8. (-2, 2) (-1, 5/2) (1, 7/2)
9. (-2, -8) (-1, -5) (1, 1)
10. Yes
11. No
12. No
13. Yes
14. No
15. No
16.
Pre-Algebra II Chapter 8 Practice Test Answer Key
y
x
17.
18.
19. Positive
20. Positive
y
y
x
x