Which of the following circles have their centers in the second quadrant? Check all that apply.

A. (x - 5)2 + (y - 6)2 = 25
B. (x + 1)2 + (y - 7)2 = 16
C. (x - 4)2 + (y + 3)2 = 32
D. (x + 2)2 + (y - 5)2 = 9
PLEASE HELP AND EXPLAIN!!!

Question

Which of the following circles have their centers in the second quadrant? Check all that apply.

 		A.	(x - 5)2 + (y - 6)2 = 25
 		B.	(x + 1)2 + (y - 7)2 = 16
 		C.	(x - 4)2 + (y + 3)2 = 32
 		D.	(x + 2)2 + (y - 5)2 = 9
PLEASE HELP AND EXPLAIN!!!

anonymous · Answer

The 2nd quad is (-,+) so

anonymous · Answer

Take (x-h) and (y-k) and set them both equal to 0 and solve for x and y

anonymous · Answer

For example, a:

x - 5 = 0
x = 5

y - 6 = 0
y = 6

(5,6) since they are both positive this is in the first quad.

So A is not right

Make sense?

anonymous · Answer

Yeah thanks bro!!

anonymous · Answer

No problem, what did you get for the answer?

anonymous · Answer

C

anonymous · Answer

Well C would give you  (+,-) you need (-,+)