# Chapter 1 - Linear Functions and Change - Strengthen Your Understanding - Page 60: 5

Yes

#### Work Step by Step

Consider the equation of a circle. $y$ and $x$ are related to each other, yet it is not a function as the relation fails the vertical line test.

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.