Answer
Always
Work Step by Step
We plug in the points (0,0). Thus, we find:
$ y=kx \\\\ 0=(0)k \\\\ 0=0$
0 always equals 0, so no matter what k is, this is true. Thus, direct variation equations always go through the origin.
Algebra 1: Common Core (15th Edition)
by Charles, Randall I.
Published by
Prentice Hall
ISBN 10:
0133281140
ISBN 13:
978-0-13328-114-9
Chapter 5 - Linear Functions - 5-2 Direct Variation - Lesson Check - Page 304: 5
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