Answer:
4.5
Step-by-step explanation:
Formula for calculating slope can also be used in finding the rate of change of the given graph above.
Rate of change = [tex] \frac{y_2 - y_1}{x_2 - x_1} [/tex]
Take the coordinates of any two points on the graph. Let make use of (2, 9) and (4, 18).
Thus,
Rate of change = [tex] \frac{18 - 9}{4 - 2} = \frac{9}{2} = 4.5 [/tex]
Rate of change demonstrated in the graph is 4.5 miles per hour.
