SOLUTION: how do I find the inverse of x->3x??? and x->3x-5 Is there a formula I can use? thankyou

Question 157492: how do I find the inverse of x->3x??? and x->3x-5
Is there a formula I can use? thankyou
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
I'll do the first one to get you going in the right direction

I'm assuming that the notation x->3x means .

Start with the given function

Replace f(x) with y

Switch x and y

Divide both sides by 3 to isolate y

So the answer is which means that the inverse function is

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