Write an equation of circle .write your answer in standard form and then general form. (-3, 2)

Question

Write an equation of circle .write your answer in standard form and then general form. (-3, 2)

Answer 1

if (-3,2) is the center of the circle then the circle's equation is:

(x+3)^2 +(y-2)^2 = r^2

or

x^2 +6x +9 +y^2 -4y +4 - r^2 = 0

x^2 +6x +y^2 -4y +13-r^2 = 0 where 13-r^2 = the constant term

or if the origin is the center and (-3,2) is a point on the circle

then

x^2 +y^2 = 13 is the equation