What is the inverse function of f(x)=4xf(x) = 4xf(x)=4x?
f−1(x)=x4f^{-1}(x) = \frac{x}{4}f−1(x)=4x
f−1(x)=x−4f^{-1}(x) = x - 4f−1(x)=x−4
f−1(x)=−4xf^{-1}(x) = -4xf−1(x)=−4x
f−1(x)=4xf^{-1}(x) = 4xf−1(x)=4x