Question

Find the rate of change of f(x) = x² - 2x + 3 on [-1,2].

Answer 1

-1.

Explanation:

Rate of change = [ f(2) - f(-1)] / [2 - (-1)]

= [(2)^2 - 2(2) + 3) - ((-1)^2 - 2(-1) + 3] / 3

= ( 3 - 6)/3

= -1.