### Home > CALC > Chapter 8 > Lesson 8.3.3 > Problem 8-127

8-127.

**Multiple Choice:**If*x*^{2}+*y*^{2}= 25 then= Homework Help ✎ −

Uh-oh! None of the multiple choice options match! That does not mean you are wrong. Look at the original equation of the circle. What does *x*² + *y*² equal? Substitute that value and find your solution.