Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 5 - Linear Functions - 5-6 Parallel and Perpendicular Lines - Practice and Problem-Solving Exercises - Page 334: 15

Answer

Parallel lines

Work Step by Step

You have two lines: y=-2x+3 and2x+y=7. The first lines' slope is -2. Change the second equation into slope-intercept form to find its slope: 2x+y=7 (subtract 2x from both sides) y=-2x+7 The slope is also -2. So, the lines are parallel because they have the same slope but different y-intercepts.
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