Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 9 - Review Exercises - Page 637: 22

Answer

Graph of $g(x)=\log_3x$

Work Step by Step

Since $y=\log_b x$ implies $ x=b^y ,$ the given function, $ g(x)=\log_3x $, implies \begin{align*} y&=\log_3x \\ 3^y&=x .\end{align*} Substituting values of $y$ in the equation above results to \begin{array}{c|c|c} \text{If }y=-1: & \text{If }y=0 & \text{If }y=1 \\\\ 3^y=x & 3^y=x & 3^y=x \\ 3^{-1}=x & 3^0=x & 3^1=x \\\\ \dfrac{1}{3^1}=x & 1=x & 3=x \\\\ \dfrac{1}{3}=x .\end{array} Tabulating the results above results to the table below. \begin{array}{c|c} \hline x & y \\\hline \dfrac{1}{3} & -1 \\\hline 1 & 0 \\\hline 3 & 1 \end{array} Connecting the points $ \left(\dfrac{1}{3},-1\right), \left(1,0\right), \text{ and } \left(3,1\right) $ with a curve gives the graph of $ g(x)=\log_3x $.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.