# Chapter 1 - 1.1 - Graphs of Equations - 1.1 Exercises - Page 78: 13

a. No b. Yes

#### Work Step by Step

We plug in each point to see if they satisfy the equation: a. $$20=(3^2) +(-2)^2 \\ 20 =9+4 \\ 20\ne 13$$ b. $$20=(-4)^2 + 2^2 \\ 20=16+4 \\ 20=20$$

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.