Answer
(a)
Work Step by Step
Since $v$ is of the form $v=mw=-3w$, then $v$ is parallel to $w$ but they have opposite directions. So the correct answer is (a).
Calculus (3rd Edition)
by Rogawski, Jon; Adams, Colin
Published by
W. H. Freeman
ISBN 10:
1464125260
ISBN 13:
978-1-46412-526-3
Chapter 13 - Vector Geometry - 13.2 Vectors in Three Dimensions - Preliminary Questions - Page 658: 3
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