Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 2 - Graphs and Functions - 2.4 Linear Functions - 2.4 Exercises - Page 233: 92


The corresponding y-value for $x=4.5$ is $7.5$

Work Step by Step

$4.5$ is midpoint of $4$ and $5$. This means that the corresponding y-value for $4.5$ is the midpoint of the corresponding y-values of $x=4$ and $x=5$. Thus, $y= \dfrac{6+9}{2}=\dfrac{15}{2}=7.5$ Therefore, the corresponding y-value for $x=4.5$ is $7.5$
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