## Precalculus (6th Edition)

Published by Pearson

# Chapter 4 - Inverse, Exponential, and Logarithmic Functions - 4.1 Inverse Functions - 4.1 Exercises - Page 418: 88

#### Answer

$f^{-1}(-4)=-4$

#### Work Step by Step

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 $(-4, -4)$ This means that $f(-4) = -4$. Thus, $f^{-1}(-4)=-4$.

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