SOLUTION: if f(x)=3x-6 and if g(f(x))=x then g(x)=?

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Question 972968: if f(x)=3x-6 and if g(f(x))=x then g(x)=?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
When a function of another function gives you x, the two functions are inverses of one another.
g(x) is the inverse of f(x)
y=3x-6
x=3y-6
(x+6)=3y
y=(x+6)/3 That is g(x)
plug it in
y= (3x-6+6)/3
=x