Find and graph the polynomial of minimal degree that passes through the following points:
(a) (3,-1), (6, 5);
(b) (0,6), (-2,4), (1,10);
(c) (-2, 3), (0,-1), (1,-3);
(d) (0,-1), (1,0), (-1,2), (2,-1);
(e) (0, -3), (-1.-3), (1, -1), (-2, 17), (2, 9).