(1) If the point M is the symmetrical point A about the straight line L, then the straight line L bisects MA vertically, because the angle between the straight line L and the two coordinate axes is 45. If point A is on the Y axis, if point M intersects with MB⊥x axis, and straight line L is at point B, and AB is connected, then △ABM is an isosceles right triangle, then AB=BM=3, and the coordinates of point B are

(2) Let the point M be the symmetrical point C about the straight line L, then the straight line L bisects MC vertically, because the angle between the straight line L and the two coordinate axes is 45. If point C is on the X-axis, let a straight line L intersect with the X-axis at point D and connect MD, then △MCD is an isosceles right triangle, then CD=MD=2, then the coordinates of point D are (3,0), and the coordinates of point D are substituted into line Y..