What would the equation of a circle be that has a center at (-4,1) and a diamter of 4 units?

Answer 1

(x+4)^2 + (y-1)^2 = 4

general formula is (x-h)^2 + (y-k)^2 = r^2 where r= radius = (1/2) the diameter and (h,k) = the center point