Question 246977
Find the average rate of change of x^2+5x from x1=3 and x2=6
Think of it as the slope between those two points.
f(x) = x^2+5x
f(3) = 3^2+5(3) = 9+15 = 24
f(6) = 6^2+5(6) = 36+30 = 66
.
rise:66-24 = 42
run: 6-3 = 3
.
Average rate of change = 42/3 = 14