9. Focus: (0, 12); directrix: y=−12; graph: e
11. Focus: (0,−964); directrix: y=964; graph: d
13. Focus: (12, 0); directrix: x=−12; graph: g
15. Focus: (−49, 0); directrix: x=49; graph: f
17. y2=8x
19. x2=−12y
21. x2=−12y
23. y2=12x
25. y2=16x
27. x2=8y
29. x2=−4(y−3); 4
31. y2=−10(x−12); 10
33. (y−1)2=−8(x−1); 8
35. (x−1)2=16(y−1); 16
37. y2=8(x−1); 8
39. x2=−12(y−1); 12
41. (y−3)2=−8(x−2); 8
43. (x−2)2=8(y−3); 8
45. Vertex: (−1, 1); focus: (−12, 1); directrix: x=−32
47. Vertex: (−2, 2); focus: (−2,114); directrix: y=54
49. Vertex: (2,−1); focus: (12,−1); directrix: x=72
51. Vertex: (1, 3); focus: (1, 12); directrix: y=112
53. Vertex: (−1, 1); focus: (−1, 54); directrix: y=34
55. Vertex: (−12,−1); focus: (−14,−1); directrix: x=−34
57. Vertex: (46, 4); focus: (55112, 4); directrix: x=55312
59. x2=12y
61. (y−2)2=−12(x+1)
63. (x−1)2=−4(y+1)
65. y2=4x and x2=12y
67. (y−1)2=2x and x2=2(y−1)