Question

Given the function defined in the table below, find the average rate of change, in simplest form, of the function over the interval 0, is less than or equal to, x, is less than or equal to, 150≤x≤15.
xx f, of, xf(x)
00 4646
1515 4343
3030 4040
4545 3737

Answer 1

Average rate of change = (f(15) − f(0)) / (15 − 0) = (43 − 46) / 15 = −3/15 = −1/5.