## College Algebra (11th Edition)

$f^{-1}(2)=3$
The inverse of a function differs from the original function in that all the x-coordinates and y-coordinates have been switched. To find the value of $f^{-1}(2)$, we have to find the corresponding x-coordinate to $y=2$ in the original $f(x)$ function and switch the coordinates. We can see that the graph contains the point (3,2). Thus, for $y=2$, $x=3$. Therefore $f^{-1}(2)=3$.