Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 4 - Writing Linear Functions - 4.3 - Writing Equations of Parallel and Perpendicular Lines - Monitoring Progress - Page 188: 2

Answer

$y=\frac{1}{4}x+3$

Work Step by Step

The given point is $(-4,2)$. The given equation of the line is $\Rightarrow y=\frac{1}{4}x+1$ Slope of the line is $m=\frac{1}{4}$. Slope of the parallel line is $m=\frac{1}{4}$. The slope-intercept form is $\Rightarrow y=mx+b$ Substitute $\frac{1}{4}$ for $m,-4$ for $x,$ and $2$ for $y$. $\Rightarrow 2=\frac{1}{4}(-4)+b$ Simplify. $\Rightarrow 2=-1+b$ Add $1$ to each side. $\Rightarrow 2+1=-1+b+1$ Simplify. $\Rightarrow 3=b$. The equation of the parallel line is $\Rightarrow y=\frac{1}{4}x+3$.
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