Question

If (m, −3) is on a circle with center (−4, −3) and radius 8, what is a value of m?

A: m=-4 +or- start square root 55 end square root
B: m=3
C: m=12
D: m=-12

Answer 1

D

Explanation:

(-3 - -3)² + (-4 - m)² = 8²

0 + (4 + m)² = 8²

4 + m = +/- 8

m = 8-4 = 4

m = -8-4 = -12