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: 2

Answer

(a) $3$ (b) $3$ (c) $-\dfrac{1}{3}$

Work Step by Step

RECALL: (1) The slope-intercept form of a line's equation is $y=mx+b$ where m = slope and b = y-intercept. (2) Parallel lines have equal slopes.. (3) Perpendicular lines have slopes that are negative reciprocals of each other (product is -1). (a) Thus, the slope of the line whose equation is given is $3$. (b) Lines parallel to the given line have a slope of $3$. (3) Lines perpendicular to the given line have a slope of $-\dfrac{1}{3}$.
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