Which function is the inverse of f(x)=x−5f(x) = x - 5f(x)=x−5?
f−1(x)=5−xf^{-1}(x) = 5 - xf−1(x)=5−x
f−1(x)=1x−5f^{-1}(x) = \frac{1}{x - 5}f−1(x)=x−51
f−1(x)=x+5f^{-1}(x) = x + 5f−1(x)=x+5
f−1(x)=x−5f^{-1}(x) = x - 5f−1(x)=x−5