Question

Find the center and radius of the circle with equation (x+2)^2 + (y-9)^2=16

center(-9,2);r=4
center(-2,9);r=16
center(2,-9);r=16
center(-2,9);r=4

Answer 1

in
(x-a)^2 + (y-b)^2 = r^2 ,
(a,b) is the center , and r the radius

Answer 2

so would it be A?

Answer 3

why you say so ?

Answer 4

opps i did 9 *2 which isn't right