Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 2 Linear Equations and Functions - 2.5 Model Direct Variations - 2.5 Exercises - Problem Solving - Page 111: 45


See below.

Work Step by Step

If the variables vary directly, then $l=ap$ for some constant $a$. Similarly $w=bl$ for some constant $b$. Then $w=bl=b(ap)=p(ab)$ where $ab$ is a constant, thus $w$ and $p$ vary directly.
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.