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 - 5.1 - Solving Systems of Linear Equations by Graphing - Monitoring Progress - Page 237: 4

Answer

$(-4,1)$

Work Step by Step

The given system of linear equation is $y=\frac{1}{2}x+3$ ...... (1) $y=-\frac{3}{2}x-5$ ...... (2) Graph each equation. The intersection point is $(-4,1)$. Check the intersection point. Equation 1: $\Rightarrow y=\frac{1}{2}x+3$ $\Rightarrow 1=\frac{1}{2}(-4)+3$ $\Rightarrow 1=-2+3$ $\Rightarrow 1=1$ True. Equation 2: $\Rightarrow y=-\frac{3}{2}x-5$ $\Rightarrow 1=-\frac{3}{2}(-4)-5$ $\Rightarrow 1=6-5$ $\Rightarrow 1=1$ True. The solution is $(-4,1)$.
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