Question

Jackson is competing in the fifth Coyote Raceway dirt bike race. The number of laps Jackson has left to complete decreases throughout the race.
This situation can be modeled as a linear relationship. Use the points (2, 7) and (4, 6) to find the answer.

What does the slope of the line tell you about the situation?
A. Jackson has 6 laps to go 4 minutes after the race starts.
B. Jackson has 5 laps to go 6 minutes after the race starts.
C. Jackson completes 2 laps every minute.
D. Jackson complete 1 lap every 2 minutes.

Answer 1

Slope = (6 − 7)/(4 − 2) = −1/2 laps per minute.
The negative sign means laps remaining are decreasing; magnitude 1/2 means Jackson does 1 lap every 2 minutes.

Answer: D.