The average rate of change from x = -9 to x = -5 is -2
How to find the rate of change
The average of change is solved using the formula
= (change in y) / (change in x)
Using the points from the graph, (-9, 1) and (-5, -7)
= (1 - (-7)) / (-9 - (-5)
= 8 / -4
= -2
The average rate of change is -2