Which of the following circles have their centers in the third quadrant?

Check all that apply.
A. (x + 9)2 + (y + 12)2 = 36
B. (x + 16)2 + (y + 3)2 = 17
C. (x + 3)2 + (y - 6)2 = 44
D. (x + 14)2 + (y - 14)2 = 84

Question

Which of the following circles have their centers in the third quadrant?

Check all that apply.
  		A. 	(x + 9)2 + (y + 12)2 = 36
  		B. 	(x + 16)2 + (y + 3)2 = 17
  		C. 	(x + 3)2 + (y - 6)2 = 44
  		D. 	(x + 14)2 + (y - 14)2 = 84

zzr0ck3r · Answer

The equation for a circle with center $(h,k)$ is given by $(x-h)^2+(y-k)^2=r^2$ and a point is in  the 3rd quadrant if both coordinates are negative.  Example: $(-9, -12)$ and $(-16,-3)$

ps there are two answers here