Graphing Linear Functions Quiz

Question

Connections Academy 8th Grade
Please only use this to check your answers.

1. Find the slope.

A. 2
B. -1/2
C. -2***
D. 1/2

2. Find the slope of the line. Describe how one variable changes in relation to the other.

A. 2; distance increases by 2 miles per hour***
B. 2; distance decreases by 2 miles per hour
C. 1/2; distance increases by 1 mile every 2 hours
D. 1/2; distance decreases by 1 mile every 2 hours

3. Find the slope of the line. Describe how one variable changes in relation to the other.

A. 2/3; the amount of water decreases by 2 gallons every 3 minutes.

B. -2/3; the amount of water decreases by 2 gallons every 3 minutes.***

C. -3/2; the amount of water decreases by 3 gallons every 2 minutes.

D. -1; the amount of water decreases by 1 gallon per minute.

4. The data in the table are linear. Use the table to find the slope.
x|2| 4| 6| 8|
y|1|-2|-5|-8|

A. 3/2
B. -3/2***
C. -2/3
D. 2/3

5. Graph the linear function in questions 5 and 6.
y = 1/3x - 4

A.
B.
C.***
D.

6. y = -2x + 3

A.
B.
C.***
D.

7. Find the slope of a line that is parallel to the line containing the points (3,4) and (2,6)

A. m = 1
B. m = 2
C. m = -2***
D. m = 1/2

8. Find the slope of a line that is perpendicular to the line containing the points (-2,-1) and (2,-3)

A. m = -2
B. m = 2***
C. m = -1/2
D. m = -1

Answer 1

9. Identify the slope and y-intercept of the line graphed below.

A. Slope = 2/5; y-intercept = -2
B. Slope = -5/2; y-intercept = -2
C. Slope = 2/5; y-intercept = 5
D. Slope = -5/2; y-intercept = 5

Answer: A. Slope = 2/5; y-intercept = -2