Question

6) If f(x) = x, the inverse of f, f-1 could be represented byAf - 1(x) = xBf - 1(x) = 11f - 1(x) =Xf - 1(x) = y

Answer 1

We have that the inverse of a function is the same function expressed in the terms of the second variable, in our case:

$f(x)=x\Rightarrow y=x\Rightarrow f^{-1}(x)=y$

The answer is C, f^-1 (x) = y.