Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 13 - Vector Geometry - 13.5 Planes in 3-Space - Preliminary Questions - Page 684: 4


The plane $ y=1$ is parallel to the $ xz $-plane.

Work Step by Step

The plane $ y=1$ is parallel to the $ xz $-plane because the normal vector to the $ xz $-plane is in the direction of $ j $, which is the unit vector in the direction of the $ y $-axis.
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