The points (1, 5), (5, 10), (7, 8) and (8, 1) are on the graph of the function p. Which expression gives the average rate of change of the function p on 5 ≤ x ≤ 8?
Average rate of change is the same as finding slope between a line on a non- linear function. Using the ordered pairs (5,10) and (8,1) (10-1)/(5-8) = 9/-2 = -9/2
