SOLUTION: find the average rate of change of f(x)=x^2-4x+2 between x=-1 and x=3

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: find the average rate of change of f(x)=x^2-4x+2 between x=-1 and x=3      Log On


   

Question 311327: find the average rate of change of f(x)=x^2-4x+2 between x=-1 and x=3
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Average rate of change = change in f(x) / change in x
Here
f(3) = -1
f(-1) = 7
so we plug in and get
avg rate = (7 - (-1)) / (-1 - 3) = 8 / -4 = -2