Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 12 - Exponential Functions and Logarithmic Functions - Mid-Chapter Review - Guided Solutions - Page 812: 1


$y=2x+5$ $\fbox{$x$}=2\fbox{$y$}-5\qquad $interchanging x and y $\left.\begin{array}{l} \fbox{$x+5$}=2y\\ \fbox{$\displaystyle \frac{x+5}{2}$}=y \end{array}\right\}\qquad$ solving for y $f^{-1}(x)=\fbox{$\displaystyle \frac{x+5}{2}$}$

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