Question 406020
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Hi
Standard Form of an Equation of a Circle is {{{(x-h)^2 + (y-k)^2 = r^2}}}
where Pt(h,k) is the center and r is the radius
circle: (x-3)^2 + (y+3)^2 = 9

 {{{drawing(300,300, -6, 6, -6, 6, grid(1),
circle(3, -3,0.3),
circle(3, -3,3),
graph( 300, 300, -6, 6, -6, 6))}}}
{{{drawing(300,300, -6, 6, -6, 6, grid(1),
circle(-3, 5,0.2),
locate(4.3,4.6,"I"),
locate(-4.3,4.6,"II"),
locate(-4.3,-4.6,"III"),
locate(4.3,-4.6,"IV"),
graph( 300, 300,-6,6,-6,6)) }}}