4x+2y+3=04x+2y+3=04x+2y+3=0
4x−2y−3=04x-2y-3=04x−2y−3=0
4x−2y+3=04x-2y+3=04x−2y+3=0
4x+2y−3=04x+2y-3=04x+2y−3=0