This is a synthesis problem of quadratic function, which involves finding the coordinates of the intersection of parabola and coordinate axis, the area of triangle, the judgment of trapezoid and other knowledge points. It's comprehensive. It's really hard. The answer/exercise/math /798999 is for yourself. Mainly to solve the problem, understand the train of thought, basically no problem. Moreover, this will be discussed in categories. I hope you can adopt it. Thank you.

It is known that the intersection of parabola Y = 3/8x 2-3/4x-3 with X axis is A, D(A is on the right side of D), and the intersection with Y axis is C. 。

(2) If point M is on a parabola, so that the area of △MAD is equal to the area of △CAD, find the coordinates of point M;

(3) If the symmetry point of point C about the parabola axis is B, is there a point P on the parabola, which makes the quadrilateral of four vertices A, B, C and P a trapezoid? If so, request the coordinates of point p.