Question

Circle P has a radius of 8 units with center P at (2, 1). Which equation defines circle P?

(x + 2)2 + (y + 1)2 = 64

(x – 2)2 + (y – 1)2 = 64

(x + 2)2 + (y + 1)2 = 8

(x – 2)2 + (y – 1)2 = 8

Answer 1

do you know the general equation of a circle with centre (h,k ) ?

Answer 2

(x−h)2+(y−k)2=r2=>(h,k)=center;r=radius

Answer 3

(x – 2)2 + (y - 1)2 = 64