If we know that for a function, f(x), that f(2) = 6 and f(5) = 1, what is the average rate of change of f(x) on the interval [2,5]?

(X1,Y1) = (2.6)

(X2,Y2) = (5,1)
slope = (Y2-Y1)/(X2-X1)
= (1-6)/(5-2) = -5/3