Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter 2 - Section 2.1 - Linear Equations in Two Variables - 2.1 Exercises - Page 145: 34


Horizontal lines: C, D Vertical lines: A, E Neither: B

Work Step by Step

Horizontal lines have the form: $y=c$ (where $c$ is a constant) Vertical lines have the form: $x=c$ (where $c$ is a constant) We try to convert each equation to a horizontal or vertical line: A. $x-6=0\rightarrow x=6$ (vertical line) B. $x+y=0\rightarrow y=-x$ (diagonal line with slope -1) C. $y+3=0\rightarrow y=-3$ (horizontal line) D. $y=-10$ (horizontal line) E. $x+1=5\rightarrow x=4$ (vertical line)
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