## Intermediate Algebra: Connecting Concepts through Application

$\text{a) } f(5)\approx-5.5 \\\text{b) } x\approx3$
$\bf{\text{Solution Outline:}}$ Use the information in the given graph. $\bf{\text{Solution Details:}}$ To estimate $f(5) ,$ find the value of $y$ when $x= 5 .$ Based on the graph, then $f(5)\approx-5.5 .$ To estimate $f(x)=-4 ,$ find the value of $x$ when $y= -4 .$ Based on the graph, $x\approx3 .$ The answers are \begin{array}{l}\require{cancel} \text{a) } f(5)\approx-5.5 \\\text{b) } x\approx3 .\end{array}