SOLUTION: If f(x)=3x-1, find (f(x+h)-f(x))/h My guess is that I have to foil the equation to cancel out like terms?

Question 853990: If f(x)=3x-1, find (f(x+h)-f(x))/h
My guess is that I have to foil the equation to cancel out like terms?
Found 2 solutions by josgarithmetic, josmiceli:
Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!
Guess not!
f(x)=3x-1.
f(x+h)=3(x+h)-1=3x+3h-1.

Replace them into the expression.

.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Just substitute for in the 1st
function everywhere you see , then
do the required algebra
------------------------
given:

find:

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