SOLUTION: find the average rate of change of f(x)= 1/(x-2) between points x=4 and x=8

Algebra ->  Functions -> SOLUTION: find the average rate of change of f(x)= 1/(x-2) between points x=4 and x=8      Log On


   

Question 213938: find the average rate of change of f(x)= 1/(x-2) between points x=4 and x=8
Answer by HyperBrain(694) About Me  (Show Source):
You can put this solution on YOUR website!
At x=4, y=1/(4-2)=1/2
At x=8, y=1/(8-2)=1/6
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The ave. rate of change is the slope of the line passing through (4,1/2) and (8,1/6)
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m=%28%281%2F6%29-%281%2F2%29%29%2F%288-4%29=%28%28-1%2F3%29%2F4%29=-1/12