Find the average rate of change of fx x2 4 a From 2 to 0
Solution
f(x) = x^2 + 4
a) -2 to 0
avearage rate of change is f(0) - f(-2) / (0 - -2 )
f(0) = 4 , f(-2) = 8
4-8 / 2 = - 2
average rate of change from -2 to 0 is -2
b) from 3 to 5
f(3) = 13
f(5) = 29
f(5) - f(3) / (5-3 ) = 8
avearge rate of change from 3 to 5 is 8
c) from -2 to 1
f(-2) = 8
f(1) = 5
average rate of change = 5 - 8 / 3 = -1

