College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.3 - Lines - 1.3 Exercises - Page 112: 7

Answer

(a) yes, (b) yes, (c) no, (d) yes

Work Step by Step

a) Yes, it is horizontal. b) Yes, it is vertical. c) A line perpendicular to a horizontal line is vertical, which has an infinite slope, so "no". d) A line perpendicular to a vertical line is horizontal, which has a slope of zero, so "yes".
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