Algebra 2 Chapter 13 Test Review Name________________ Date_________________ Find the midpoint and distance between each pair of points whose coordinates are given. Express answers in simplest form. 1. (-2, -4) and (3, 4) 2. (2, -5) and (-3, -1) 3. (5, 2) and (-1, 4) Midpoint ___________ Midpoint ___________ Midpoint ___________ Distance ___________ Distance ___________ Distance ___________ Graph the circle. Identify the center and radius. 2 2 4. y 2 x 2 9 5. x 2 y 3 30 4.______________ Center ________________ Radius 5.______________ Center ________________ Radius Write the equation of the circle that satisfies the given information. 6. Center (0, 0) r = 9 7. Center (3, -5) r 2 5 8. Center (0, 0) and the point on the circle (-3, 5) 9. Center (0, 0) and the point on the circle (4, -6) Find the coordinates of the foci of the ellipse centered at the origin with the given information. 10. Vertices: (0, -4) (0, 4); 11. Vertices: (-3, 0) (3, 0); Co-vertices: (-2, 0) (2, 0) Co-vertices: (0, -1) (0, 1) Graph the ellipse. Identify the vertices, co-vertices, and foci of the ellipse. x2 y2 x2 y2 12. 13. 1 1 9 25 36 8 12._____________ Vertices ________________ Co-Vertices ________________ Foci 13._____________ Vertices ________________ Co-Vertices ________________ Foci y2 1 14. x 7 2 15. 2 x 2 25 y 2 50 14._____________ Vertices ________________ Co-Vertices ________________ Foci 15._____________ Vertices ________________ Co-Vertices ________________ Foci Write an equation of an ellipse that satisfies the given information. 16. Center (0, 0); Vertex (0, -6); 17. Center (0, 0); Vertex (7, 0); Co-Vertex (4, 0) Co-Vertex (0, 3) 18. Center (0, 0); Vertex (0, -8); Focus (0, 1) 19. Center (0, 0); Vertex (-9, 0); Focus (3, 0) Graph the parabola. Label the focus, directrix, and axis of symmetry. 9 1 20. y 2 x 21. x 2 y 2 3 Focus:_______________ Focus:_______________ Directrix:_____________ Directrix:_____________ Axis of Symmetry:______ Axis of Symmetry:______ x x y y Write the equation of the parabola with its vertex at the origin that fits the given conditions. 3 22. Focus (-3, 0) 23. Focus 0, 8 24. Directrix y = - 5 25. Directrix x = 6 Identify the vertices and foci of the hyperbola. x2 y2 26. 1 16 25 27. y2 x2 1 4 49 Graph the hyperbola. Identify the asymptotes, vertices, and foci. x2 y2 y2 x2 28. 29. 1 1 49 16 9 36 28._____________ Asymptotes ________________ Vertices ________________ Foci 29._____________ Asymptotes ________________ Vertices ________________ Foci 30. 36 x 2 9 y 2 36 30._____________ Asymptotes ________________ Co-Vertices ________________ Foci Write an equation of a hyperbola that satisfies the given conditions. 31. Foci (-7, 0) (7, 0) 32. Foci (0, -5) (0, 5) Vertices (-4, 0) (4, 0) Vertices (0, -3) (0, 3) 33. Foci (0, -2) (0, 2) Vertices (0, -1) (0, 1) 34. Foci (-3, 0) (3, 0) Vertices (-2, 0) (2, 0) Identify the conic section from its equation. A) For circles, also identify the radius B) For ellipses, also identify the vertices, co-vertices, and foci C) For parabolas, also identify the axis of symmetry, focus, and directrix D) For hyperbolas, also identify the vertices and foci 35. y2 x 16 36. x2 y2 1 16 64 y2 37. x 1 14 38. x 2 7 y 39. 20 x 2 20 y 2 80 40. 4 y 2 6 x 2 12 2 Answer Key 1. MP = (1/2, 0) d =√89 4. 2. MP(-1/2, -3) d =√41 5. 3. MP = (2, 3) d =2√10 6. 𝑥 2 + 𝑦 2 = 81 7. (𝑥 − 3)2 + (𝑦 + 5)2 = 20 8. 𝑥 2 + 𝑦 2 = 34 9. 𝑥 2 + 𝑦 2 = 52 10. (0,2√3) (0, -2√3) 11. (2√2, 0) (-2√2, 0) C: (0, 0) r = 3 12. V: (0, ±5) CV: (±3, 0) F: (0, ±4) C: (2, -3) r = √30 13. V: (±6, 0) CV: (0, ±2√2) F: (±2√7, 0) 14. V: (0, ±√7) CV: (±1, 0) F: (0, ±√6) 15. V: (±5, 0) CV: (0, ±√2) F: (±√23, 0) 16. 𝑥2 16 𝑦2 + 36 = 1 𝑥2 49 17. + 𝑦2 9 =1 18. 9 2 20. 𝑦 2 = 𝑥 9 Focus (8 , 0) Focus 9 −8 3 2 23. 𝑥 2 = 𝑦 𝑥2 81 𝑦2 + 72 = 1 1 𝑦2 29. 4 𝑥2 30. 36𝑥 2 − 9𝑦 2 = 36 − 36 = 1 Asymptotes: y = ± x 2 Vertices (0, -3) (0, 3) Foci (0, 3√5) (0, -3√5) 𝑦2 9 32. 𝑥2 − 16 = 1 33. 𝑦2 − Asymptotes: y = ±4x Vertices (1, 0) (-1, 0) Foci (√5, 0) (-√5, 0) 𝑥2 3 =1 34. 𝑥2 4 − 𝑦2 5 =1 36. Ellipse V: (0, ±8), CV: (±4, 0) 37. Hyperbola V: (±1 , 0) F: (0, ±4√3) F: (±√15, 0) 35. parabola F(4, 0) dir. x = -4 7 𝑦2 9 1 Asymptotes: y = ± x 7 Vertices (-7, 0) (7, 0) Foci (-√65, 0) (√65, 0) 𝑦2 𝑦 2 = −24𝑥 25. 27. V: (0, ±2); F: (0, ±√53) − 16 = 1 31. 16 − 33 = 1 𝑥 2 = 20𝑦 24. 26. V: (±4, 0); F: (±√41, 0) 𝑥2 1 3 1 (0, 12) 19. Directrix 𝑦 = − 12 Axis of Symmetry y-axis 22. 𝑦 2 = −12𝑥 𝑥2 49 𝑦2 + 64 = 1 21. 𝑥 2 = 𝑦 Directrix 𝑥 = Axis of symmetry x-axis 28. 𝑥2 63 7 38. parabola F(0, 4) dir. 𝑦 = − 4 39. Circle r = 2 40. Hyperbola V: (0, ±√3) F: (0, ±√5)