Question

Can someone PLEASE check my answer?

Given f(x) = (2x - 2)/4, solve for f^−1(3).

I got 7.

Answer 1

Yes, first find \(f^{-1}(x)\)
y=(2x-2)/4
x=(2y-2)/4 (swap x, y)
4x=2y-2 (solve for y)
y=2x+1
\(f^{-1}(x)=2x+1\)
\(f^{-1}(3)=2(3)+1=7\)
Yes your answer is correct!

Answer 2

thank you :)

Answer 3

you're welcome! :)