a circle is centered at (-4,9) and has a radius of 11. what is the equation of the circle. use x and y

(x + 4) ^2 + (y-9) ^2 = 121

Step-by-step explanation:

We can write the equation of a circle as

(x-h) ^2 + (y-k) ^2 = r^2 where (h, k) is the center and r is the radius

(x - - 4) ^2 + (y-9) ^2 = 11 ^2

(x + 4) ^2 + (y-9) ^2 = 11 ^2

(x + 4) ^2 + (y-9) ^2 = 121