Find the equation of the circle centered at (1,-4) with radius 3.
Write your equation in the form "(x - h)^2 + (y - k)^2 = r^2".
The equation of the circle is (x - 1)^2 + (y + 4)^2 = 3.
This is an extremely easy question.
The centre is (h,k) and the radius is r.
Do the substitution yourself.