How do you find the center-radius form of the equation of the circle given Center (0,-2), radius 6?
The center-radius form of the equation of a circle is:
#(x-h)^2+(y-k)^2 = r^2#
So in our example, we can write:
If we are slightly less fussy about the form, this simplifies to:
#x^2+(y+2)^2 = 36#