Question

Find the average rate of change of f(x)=-3x^2+1:
a) From 1 to 3____
b) From 3 to 5____
c) From 1 to 4______

Answer 1

(a) [f(3) - f(1)]/(3-1)
= (28-4)/2 = 12

(b) [f(5) -f(3)]/(5-3)
= (76-28)/2 = 24

(c) [f(4) - f(1)]/(4-1)
= (your turn)