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 368: 30

Answer

The solution of the system is $(1,1)$. Thus, the system has one solution.

Work Step by Step

Graph both equations in the same coordinate plane. $3x -y=2\rightarrow y=3x-2$ The slope is $3$. The y-intercept is $-2$. $4y=-x+5 \rightarrow y=-\frac{1}{4}x+\frac{5}{4}$ The slope is $-\frac{1}{4}$. The y-intercept is $\frac{5}{4}$. Find the point of intersection. The lines appear to intersect at $(1,1)$. Check to see if $(1,1)$ makes both equations true. $y=3x-2 \rightarrow 1=3(1)-2 \rightarrow 1=1$ $y=-\frac{1}{4}x+\frac{5}{4} \rightarrow 1=-\frac{1}{4}(1)+\frac{5}{4} \rightarrow 1=1$ The solution of the system is $(1,1)$. Thus, the system has one solution.
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