4x+3y−10=04 x+3 y-10=04x+3y−10=0
3x−4y+55=03 x-4 y+55=03x−4y+55=0
3x+4y+55=03 x+4 y+55=03x+4y+55=0
4x+3y+30=04 x+3 y+30=04x+3y+30=0