Work Step by Step
$z=axy$, where a is the constant of variation. We rearrange to get $a=z/(xy)$ Plugging in our variables $ y=-4, x=-3, z=-36$ $a=-36/[(-4)*(-3)]$ or $a=-3$
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.