Find and Write an Inverse Function Practice Test

$f^{-1}(x)=\dfrac{1-x}{2x}$, where $x\ne 0$

$f^{-1}(x)=\dfrac{x+2}{x}$, where $x\ne 0$

$f^{-1}(x)=\dfrac{2x}{1-x}$, where $x\ne 1$

$f^{-1}(x)=\dfrac{x}{x-2}$, where $x\ne 2$