Algebra: A Combined Approach (4th Edition)

$f^{-1} = \{ (-4,2), (13,-1), (0,0), (-8,-7)\}$
Switch the coordinates of each ordered pair. $f = \{ (2,-4), (-1,13), (0,0), (-7,-8)\}$ $\Rightarrow f^{-1} = \{ (-4,2), (13,-1), (0,0), (-8,-7)\}$