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 5 - Solving Systems of Linear Equations - 5.3 - Solving Systems of Linear Equations by Elimination - Exercises - Page 252: 42

Answer

$y=\frac{2}{3}x+\frac{4}{3}$

Work Step by Step

The given point is $(-5,-2)$. The given equation of the line is $\Rightarrow y=\frac{2}{3}x+1$ Slope of the line is $m=\frac{2}{3}$. Slope of the parallel line is $m=\frac{2}{3}$. The slope-intercept form is $\Rightarrow y=mx+b$ Substitute $\frac{2}{3}$ for $m,-5$ for $x,$ and $-2$ for $y$. $\Rightarrow -2=\frac{2}{3}(-5)+b$ Simplify. $\Rightarrow -2=-\frac{10}{3}+b$ Add $\frac{10}{3}$ to each side. $\Rightarrow -2+\frac{10}{3}=-\frac{10}{3}+b+\frac{10}{3}$ Simplify. $\Rightarrow \frac{-6+10}{3}=b$ $\Rightarrow \frac{4}{3}=b$ The equation of the parallel line is $\Rightarrow y=\frac{2}{3}x+\frac{4}{3}$.
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