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: 17

Answer

$(-1,3)$

Work Step by Step

For both equations, find 2 points and extend the line. Because of the form of these equations, It is easy to find the intercepts as the 2 points. For equation 1 (Red Line): Find x-intercept: $y= 0$ $2x - 0 = -5$ $2x = -5$ $x = -5/2$ $(-5/2,0)$ Find y-intercept $x=0$ $0 -y = -5$ $-y = -5$ $y = 5$ $(0,5)$ Connect these points and extend. For equation 2 (Blue line): Find x-intercept: $y= 0$ $-2x - 0 = -1$ $-2x = -1$ $x = 1/2$ $(1/2,0)$ Find y-intercept $x=0$ $0 -y = -1$ $-y = -1$ $y = 1$ $(0,1)$ Connect these points and extend. After that, find where the 2 points cut. The point should be $(-1,3)$
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