Using the process of elimination, we will get x=2
Therefore, the circle passes through point (2, -4).
To find the radius
of the circle, use the distance formula.
The equation of a circle with centre at (h,k) and radius r is
(x-h)² + (y-k)² = r²
Therefore, the equation of the circle is (x+1)² + (y+3)² = 10
In general form,
x² +2x +y² +6y = 0