(1) Write the coordinates of point B ▲;
(2) The known point P is one of the images of the quadratic function Y =-x2+3x on the right side of the Y axis.
A moving point, the straight line Y =-2x translates along the Y axis, and the X axis and the Y axis intersect.
C and D. If △PCD at right angles to CD is similar to △OCD, then the point
The coordinate of p is ▲.
Answer (1)(32,-3); (2)(2,2)、( 12,54)、( 1 14, 1 1 16)、( 135,2625)