A foot of the normal from the point 4 3 to a circle is 2 1 and a diameter of the circle has the equa...........

A foot of the normal from the point (4, 3) to a circle is (2, 1) and a diameter of the circle has the equation 2x – y = 2. Then the equation of the circle is

$x^{2}+y^{2}+2x-1=0$