Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 8 - Coordinate Geometry and Linear Systems - 8.2 - Graphing Linear Equations - Problem Set 8.2 - Page 343: 47


The answer is below.

Work Step by Step

We simplify the second equation. $$-x+y=-4 \\ -x + y +4 = 0 \\x-y=4$$ Since this simplifies to the first equation, we see that the two equations are equations for the same line.
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