x2+y2−6y=0x^{2}+y^{2}-6 y=0x2+y2−6y=0
x2+y2−3y=0x^{2}+y^{2}-3 y=0x2+y2−3y=0
x2+y2−3x+2=0x^{2}+y^{2}-3 x+2=0x2+y2−3x+2=0
x2+y2−6x=0x^{2}+y^{2}-6 x=0x2+y2−6x=0