) Use implicit differentiation to find the points where the parabola defined by 2 2 x - 2xy + y+8x+ - 12y +36= 0 has horizontal and vertical tangent lines. The parabola has horizontal tangent lines at the point(s) The parabola has vertical tangent lines at the point(s) dy (1 point) Find by implicit differentiation, where 4x5 + 7x y 2xy5 = 4. dx dy dx