Graphing Linear Functions Quiz
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
1 answer
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