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: 12

Answer

The solution of the system is $(3,2)$.

Work Step by Step

Graph both equations in the same coordinate plane. $y = \frac{1}{3}x+1 \rightarrow $ The slope is $\frac{1}{3}$. The y-intercept is $1$. $y =-3x+11 \rightarrow $ The slope is $-3$. The y-intercept is $11$. Find the point of intersection. The lines appear to intersect at $(3,2)$. Check to see if $(3,2)$ makes both equations true. $y=\frac{1}{3}x+1 \rightarrow 2=\frac{1}{3}(3)+1 \rightarrow 2=2$ $y=-3x+11 \rightarrow 2=-3(3)+11 \rightarrow 2=2 $ The solution of the system is $(3,2)$.
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