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 - Chapter Review - Page 282: 1

Answer

The solution is $(2,-5)$. The graph is shown below.

Work Step by Step

The given system of linear equation is $y=-3x+1$ ...... (1) $y=x-7$ ...... (2) Graph each equation. The intersection point is $(2,-5)$. Check the intersection point. Equation 1: $\Rightarrow y=-3x+1$ $\Rightarrow -5=-3(2)+1$ $\Rightarrow -5=-6+1$ $\Rightarrow -5=-5$ True. Equation 2: $\Rightarrow y=x-7$ $\Rightarrow -5=2-7$ $\Rightarrow -5=-5$ True. Hence, the solution is $(2,-5)$.
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