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: 45

Answer

y=-6

Work Step by Step

Since we know that in a direct variation the ratio of yx is constant, lets divide the two y-coordinates with their respective x-coordinates and set them equal to each other: y/1=−9/(3/2). (Cross Multiply) 3y/2=-9 (Multiply both sides by 2) 3y=-18 (Divide both sides by 3) y=-6
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