Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 6 - Systems of Equations and Inequalities - 6-1 Solving Systems by Graphing - Practice and Problem-Solving Exercises - Page 367: 10

Answer

The solution of the system is $(2,4)$.

Work Step by Step

Graph both equations in the same coordinate plane. $y = 2x \rightarrow $ The slope is $2$. The y-intercept is 0. $y =-2x+8 \rightarrow $ The slope is $-2$. The y-intercept is 8. Find the point of intersection. The lines appear to intersect at $(2,4)$. Check to see if $(2,4)$ makes both equations true. $y=2x \rightarrow 4 = 2(2) \rightarrow 4=4 $ $y=-2x+8 \rightarrow 4=-2(2)+8 \rightarrow 4=4 $ The solution of the system is $(2,4)$.
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