Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 5 - Linear Functions - 5-2 Direct Variation - Practice and Problem-Solving Exercises - Page 304: 11

Answer

Yes; -2

Work Step by Step

Direct variation has the form y=kx. Thus, we need to simplify to isolate y to see if it is direct variation. Thus, we obtain: $6y=-12x \\\ y=-2x$ This does have the form y=kx, so it is direct variation. k is the constant of variation, so we know that the thing x is being multiplied by, -2, is the constant of variation.
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