Find the coordinates of the centre and the radius of the
circle
x^2 + y^2 - 4x + 6y - 12 = 0
I need help with the second part. Anyway coordinates for centre
of circle is (2,-3). However, I don't really quite get the question
for 2nd part. Does it mean find the coordinate of the radius of the
circle or just the radius?
Cuz the answer is y = 3/4 x - 9/2
Which leads to me think that this could be a wrong answer
because how can there be a fixed equation for the radius of a
circle? Since a circle goes in a round, for example at x -
coordinate 5, there could be 2 answers for the y
-coordinates, for the upper and lower part of the circle.
Do clear my doubts if possible. Thank you very much.