## Precalculus (6th Edition) Blitzer

The inverse of $\left\{ \left( 1,4 \right),\left( 2,7 \right) \right\}$ is $\left\{ \left( 4,1 \right),\left( 7,2 \right) \right\}$ When making the inverse of a function, the domain and range of the function are interchanged.