5x−12y−131=05 x-12 y-131=05x−12y−131=0
12x+5y−73=012 x+5 y-73=012x+5y−73=0
12x+5y+73=012 x+5 y+73=012x+5y+73=0
12x−5y−73=012 x-5 y-73=012x−5y−73=0