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: 11

Answer

The solution of the system is $(4,9)$.

Work Step by Step

Graph both equations in the same coordinate plane. $y = \frac{1}{2}x+7 \rightarrow $ The slope is $\frac{1}{2}$. The y-intercept is $7$. $y =\frac{3}{2}x+3 \rightarrow $ The slope is $\frac{3}{2}$. The y-intercept is $3$. Find the point of intersection. The lines appear to intersect at $(4,9)$. Check to see if $(4,9)$ makes both equations true. $y=\frac{1}{2}x+7 \rightarrow 9=\frac{1}{2}(4)+7 \rightarrow 9=9 $ $y=\frac{3}{2}x+3 \rightarrow 9=\frac{3}{2}(4)+3 \rightarrow 9=9 $ The solution of the system is $(4,9)$.
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