Answer
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.
$$20=(-4)^2 + 2^2 \\ 20=16+4 \\ 20=20$$
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.