Question

What is the inverse of f(x) = 2x − 8?

Answer 1

Inverse are.... you replace the x's with y's and the y's with x's
y = 2x - 8 is your equation
x = 2y - 8 is the inverse

Answer 2

thats not complete. you switch the X and Y then solve for Y. then you get ure inverse

Answer 3

I dunno why people always make inverses so odd..
\[f(x)=2x-8 \text{ , } f(f^{-1}(x)) = x \]
\[\implies x = 2f^{−1}(x) - 8\]
\[\implies 2f^{−1}(x) = x + 8\]
\[\implies f^{−1}(x) = \frac{1}{2}x + 4\]