Name: Parabolas Score: ____/24 ____/6 Identify focus and directrix of the graph of each equation 1. –y + x2 = 3 2. –x – 3y2 = 0 3. 8x = y2 + 6y + 9 Focus: Focus: Focus: Directrix: Directrix: Directrix: ___/6 Write an equation of a parabola with vertex at the origin. 4. Focus at (-2,0) 5. Directrix at x = 3 6. Focus at (0,-3) 7. Directrix at x = -2 8. Directrix at y = -3 9. Focus at (3,0) ____/12 Identify the vertex, focus and directrix of the graph of each equation. Then sketch a graph. 10. 𝑦 + 1 = Vertex: −1 (𝑥 4 11. X = 2y2 Vertex: − 3)2 12. y2 – 4x – 2y = 3 Vertex: Focus: Focus: Focus: Directrix: Directrix: Directrix: y 5 4 3 2 –4 –3 –2 –1 –1 4 4 3 3 2 2 1 –5 1 2 3 4 5 x –5 –4 –3 –2 –1 –1 –2 –3 –4 1 2 3 4 5 x –4 –3 –2 –1 –1 1 2 3 –2 –2 –3 –3 –4 –4 –5 –5 –5 Conics Packet 5 1 1 –5 5 y y 1 Rev A 4 5 x Name: Circles Score: ____/21 ____/3 Write an equation of a circle with the given center and radius 13. center (-1, 0) radius 6 14. center (4,-4) radius 1.5 15. center (5, -1) radius 1.1 ____/6 Find the center and radius of each circle. 16. (x+1)2 + (y-8)2= 1 17. x2 + (y+3)2= 9 18. x2 + y2= 144 Center: Center: Center: Radius: Radius: Radius: ____/3 Write an equation for each translation. 19. x2 + y2= 9; right 4 down 2 20. x2 + y2= 12; left 2 up 5 21. x2 + y2= 36; left 8 down 6 ____/9 Use the center and radius to graph each circle 22. x2 + (y+3)2 = 121 Center: 23. (x-8)2 + (y+9)2 = 64 Center: Radius: Radius: Radius: y –5 –4 –3 –2 Conics Packet 24. (x+7)2 + (y+2)2 = 80 Center: y y 5 5 5 4 4 4 3 3 3 2 2 2 1 1 1 –1 –1 1 2 3 4 5 x –5 –4 –3 –2 –1 –1 1 2 3 4 5 x –5 –4 –3 –2 –1 –1 –2 –2 –2 –3 –3 –3 –4 –4 –4 –5 –5 –5 2 1 2 3 Rev A 4 5 x Name: Ellipse Score: ____/18 ____/6 Write an equation of each ellipse in standard form with center at origin and with the given characteristics 25. Height 8, width 18 26. Foci(±5,0) co-vertices (0, ±2) 27. Height 3, width 1 28. vertex(6,0) co-vertex (0, -5) 29. vertex(0,2) co-vertex (-1, 0) 30. vertex(-2,0) co-vertex (0, -1) ____/12 Find the foci, vertices and co-vertices for each equation of an ellipse. Then graph the ellipse. 31. 𝑥2 36 + 𝑦2 81 32. 16x2 + 25y2 = 1600 =1 33. Focus: Focus: 𝑦2 144 =1 Vertices: Co-Vertices: Co-Vertices: + Focus: Vertices: Vertices: 𝑥2 64 Co-Vertices: y y y 5 5 5 4 4 4 3 3 3 2 2 2 1 1 1 –5 –5 –4 –3 –2 –1 –1 1 2 3 4 5 –4 –3 –2 –1 –1 x –2 –2 –3 –3 –4 –4 –5 –5 Conics Packet 1 2 3 4 5 x –5 –4 –3 –2 –1 –1 1 2 3 –2 –3 –4 –5 3 Rev A 4 5 x Name: Hyperbola Score: ____/18 ____/6 Find the equation of a hyperbola with the given a and c values. Assume that the transverse axis is horizontal. 34. a=7 c = 9 35. a = 5 c = 15 36. a = 67 c = 92 37. a = 8 c = 20 38. a = 6 c = 8 39. a = 3 c = 7 ____/12 Find the foci, vertices and asymptotes of each hyperbola. Then draw the graph. 40. 4y2 -36x2 = 144 41. 121y2 -4x2 = 121 Focus: Focus: Vertices: Vertices: Asymptotes: 42. 𝑦2 25 − 𝑥2 16 =1 Focus: Vertices: Asymptotes: y Asymptotes: y y 5 5 4 4 3 3 2 2 1 1 5 4 3 2 1 –5 –4 –3 –2 –1 –1 1 2 3 4 5 x –5 –4 –3 –2 –1 –1 –2 –2 –3 –3 –4 –4 –5 –5 1 2 3 4 5 x –5 –4 –3 –2 –1 –1 1 2 3 –2 –3 –4 –5 Conics Packet 4 Rev A 4 5 x Name: Translating Conic Sections Score: ____/14 ____/8 Identify the conic section represented by each equation by writing the equation in standard form. For a parabola, give the vertex. For a circle, give its center and radius. For an ellipse or hyperbola, give its center and foci. 43. 3x2 + 6x+ 5y2 – 20y – 13 = 0 44. x2 -9y2 + 36y – 45 = 0 45. x2 - 8x+ y2 – 4y + 19 = 0 46. x2 - 10x- 4y2 + 24y – 15 = 0 47. 4x2 - 16x+ 4y2 – 16y – 4 = 0 48. x2 - 4x+ 4y2 + 8y = 0 49. x2 - 2x– y + 3 = 0 50. y2 + 2y – x + 3 = 0 ____/6 Write an equation of a conic section with the given characteristics 51. Hyperbola with center (-4,5), one vertex(-4,7), one focus(-4,8) 52. Parabola with vertex (1,-2), x-intercept 3, and opens to right 53. Ellipse with center (-4,-5), endpoints of major and minor axes (-4,-7), (-4,-3), (-1, -5),(-7,-5) 54. Circle with center (-1,2) diameter 12 55. Hyperbola with vertices (0,2) and (4,2), foci(-1,2) and (5,2) 56. Ellipse with center (0,-2), vertical major axis of length 5, minor axis of length 3 Conics Packet 5 Rev A