Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 1 - Linear Functions - 1.3 Fundamentals of Graphing and Slope - 1.3 Exercises - Page 53: 86

Answer

The graph is shown below.

Work Step by Step

The given linear equation is $\Rightarrow y=-\frac{1}{4}x+\frac{9}{4}$ For the vertical intercept plug $x=0$. $\Rightarrow y=-\frac{1}{4}(0)+\frac{9}{4}$ Simplify. $\Rightarrow y=\frac{9}{4}=2.25$ The vertical intercept is $A=(0,2.25)$ Slope is $m=\frac{-1}{4}$, so the rise is $-1$ when the run is $4$. Starting at $(0,2.25)$ and going down $1$ and over $4$, we get to $B=(4,1.25)$. Repeat the same to get the next point $C=(8,0.25)$. By using theses three points draw a line.
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