Question

The scatterplot shows a linear relationship between the distance traveled and the time elapsed. What is the rate of change of the linear relationship?

For every increase in time by 1 hour, the distance increases
36 miles.
54 miles.
72 miles.
90 miles.

Answer 1

The answer is C. 72 miles.

Explanation:

Answer 2

To solve the question we get the slope for the given graph. This is given by:
slope,m=(change in y-values)/(change in x-values)
taking 2 points (1.25, 90) and (0.75,54) we get:
slope,m=(90-54)/(1.25-0.75)=36/0.5=72
The answer is:
72 miles