x, y, a, b, c, d, 
10000*d-323536
(x-48)^2+(y-89)^2+784-(48*a+89*b+28*c)^2-d^2
(x-77)^2+(y-3)^2+1369-(77*a+3*b+37*c)^2-d^2
(x-49)^2+(y-23)^2+3249-(49*a+23*b+57*c)^2-d^2
a*x+b*y
a^2+b^2+c^2-1
