## Precalculus (6th Edition)

$f^{-1}(-3)=-2$
RECALL: (1) If $(a, b)$ is on the graph of $f(x)$, then $f(a) = b$. (2) If $f(a)=b$, then $f^{-1}(b)=a$ The given graph contains $(-2, -3)$ This means that $f(-2) = -3$. Thus, $f^{-1}(-3)=-2$.