Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 6 - Systems of Equations and Inequalities - 6-1 Solving Systems by Graphing - Lesson Check: 2

Answer

$ x = 2 $ $ y = 3$

Work Step by Step

#1 The 2 equation is $-x + 2y = 4 $ $y = x + 1$ #2 Substitute one equation into 2nd equation solve for X. $ -x + 2y = 4 $ $ -x + 2\times(x+1) = 4 $ $ -x + 2x + 2 = 4 $ $....... .-2..-2$ $-x + 2x = 2 $ $x = 2$ #3 Solve for Y Substitute x into one of the equation. $y = x + 1$ $y = 2 + 1$ $y = 3$ #4 $ x = 2 $ $ y = 3$
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