Asked by Kiki

If the coordinates of the center of a circle are (-3,1) and the radius is 4, what is an equation of the circle
Answered by Graham
The equation of a line whose center is (a, b) and radius is c is:

(x-a)^2 + (y-a)^2 = c^2
Answered by Kiki
Is it (x-3)^2 + (y-1)^2 =16
Answered by Graham
No, it's:

(x+3)^2 + (y-1)^2 = 16
Answered by Kiki
Thank you