2x+3y+12=02 x+3 y+12=02x+3y+12=0
2x−3y+13=02 x-3 y+13=02x−3y+13=0
2x−y+5=02 x-y+5=02x−y+5=0
x+2y−11=0x+2 y-11=0x+2y−11=0