## Precalculus (6th Edition)

Fill the blank with ... $(b, a)$ ...
Graphing the inverse of a function can be done by reflecting the graph over the line $y=x$. Points (x,y) and (y,x) are symmetric relative to the line $y=x,$ so, as stated in "Important Facts about Inverses" on p.414, 3. If the point $(a, b)$ lies on the graph of $f$, then $(b, a)$ lies on the graph of $f^{-1}$.