Algebra 1: Common Core (15th Edition)

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

Chapter 5 - Linear Functions - Chapter Review - Page 354: 17


y varies directly with x. The direct variation equation is $y = -2.5x$.

Work Step by Step

Find $\frac{y}{x}$ for each ordered pair. $\frac{y}{x}=\frac{-7.5}{3}=-2.5$ $\frac{y}{x}=\frac{2.5}{-1}=-2.5$ $\frac{y}{x}=\frac{-5}{2}=-2.5$ $\frac{y}{x}=\frac{-12.5}{5}=-2.5$ The ratio is $\frac{y}{x}=-2.5$ for each data pair. So y varies directly with x.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.