5. [-/6.76 Points] DETAILS TANAPCALC9 2.6.028. Let f be defined as follows. y = f (x) = x2 - 2x (a) Find the average rate of change of y with respect to x in the following intervals. from x = 3 to x = 4 from x = 3 to x = 3.5 from x = 3 to x = 3.1 (b) Find the (instantaneous) rate of change of y at x = 3