Question

已知圆c经过点P（4,2）Q（-6,-2）且圆心在y轴上圆的方程

Answer 1

C(0,b)

(0-4)^2+(b-2)^2=(0+6)^2+(b+2)^2

b=-2.5,r^2=36.25

x^2+(y+2.5)^2=36.25