Answer
Never
Work Step by Step
When k does not equal 0, it is never going to be true that k+x is the same as the actual equation for direct variation, y=kx.
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: 6
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