Question

A graph shows time (hours) labeled 1 to 2 on the horizontal axis and distance (miles) on the vertical axis. A line of orange dots increases from 0 to 2.5 hours.
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

72 miles per hour.

Explanation: using two points on the line (for example (0,0) and (2.5,180)), the rate = rise/run = 180 ÷ 2.5 = 72 miles per hour.