## Algebra 1: Common Core (15th Edition)

Published by Prentice Hall

# Chapter 5 - Linear Functions - 5-2 Direct Variation - Got It?: 2

#### Answer

B. $y=-5x$ ; 75

#### Work Step by Step

We know direct variation has the equation y=kx. Thus, we plug in the points and solve for k: $y=kx \\\\ 10=-2k \\\\ k=-5$ We substitute k back in to get the equation: $y=-5x$ We now plug in x=-15: $y=(-5)(-15)=75$

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.