Question

what is the center and radius of the circle with equation (x + 9)2 + (y + 5)2 = 64?

Answer 1

whats your gut say?

Answer 2

the radius is 64 right?

Answer 3

the square of the radius is 64

r^2 = 64, r = 8

Answer 4

all we need to do is pull out the center now

Answer 5

i think its center: (5, 9); radius = 8
or maybe theyre negative im not sure

Answer 6

(x + 9)2 + (y + 5)2 = 64, r = 8
^^^ ^^^
drop and negate
-9, -5

Answer 7

i got it. thanks once again haha :)

Answer 8

youre welcome