Algebra II R Semester 1 Final Exam Review 2012 Name ______________________________ 1. Multiply: (2 x2 5)(3x 2 7 x) 2. Evaluate: a 2, b -3 and c 4 a(b c) c ( a b) 3. Solve for x: 4. Solve the equations for “a ” 1 1 K ap H at 2 3 3 8(5x 2) 2 x (7 x 4) 5. The Perimeter of a rectangle is 12. The length is 2 more than the width. Find both dimensions. 7. Solve for x: 6. 3x 5 9 x 8 8. Factor: x 3 5 9 20 x5 y 6 z 7 15x 2 y 4 z 3 35x7 y 2 z 2 9. 10. a. State the slope of the line containing the points (4, 3) and (-9,6) . _______ b. What is the slope of a line parallel to this line? _______ c. What is the slope of a line perpendicular to this line? Solve the inequality, and graph the solution on a number line _______ Factor: a. 9 x2 12 x 4 _______________ b. 16 x2 8x 1 _______________ 2 11. Describe these lines as parallel, intersecting, or same. hint: check the slopes 3 y x 1 4 a. 3 y x5 4 4 y x2 3 b. 4 y x2 14. 3 c. x y 4 2x 2 y 8 Graph: 2 x 3 y 6 m = _______ b = _______ _______________ _______________ _______________ 13. Write the equation of a line in slope-intercept form. hint: for problem b use point-slope y y1 m x x1 a. m 6 b 4 12. 14. Write an equation of a line in Standard form. hint: for problem b use point-slope a. m 4 b 6 __________________ ___________________ b. m 5 pt. 2,1 ___________________ m 3 pt. 1, 5 ________________ b. 15. f ( x) 2 x 2 3 x 6 16. Which of the following are functions? f (1) _______ a. (4,5),(4, 2),(5, 2) f (3) ______ b. (5, 4),(6, 4),(3,1) 17. Factor a. x3 125 ______________________ b. 8 y 3 1 ______________________ 18. Solve the system: 2x 3y 7 5 x 2 y 30 ________ ________ 3 19. 20. Factor: a. 2 x 2 32 ___________________ Solve the system y 2 x 1 4 x 3 y 23 b. xy 2 49 x ___________________ 21. 22. A collection of dimes and quarters has $1.55. There is a total of 8 coins. Write and solve a system of equations to find the number of each. State the equation of each line. (5, 4) (6,3) _________________ _______________ 24. Name all of the subsets of the real numbers to which each is a member. Use: R I Q Z W N 2 ____________________ 23. Graph and shade the system y 2 2 y x2 5 25. 2.5 ____________________ 5 ____________________ 26. Factor: x2 2 x 3 ________________ Simplify: 5x2 12 x 4 ______________ (4 x 3 y)(4 x 3 y) _____________________ (3x 2)(4 x 5) _______________________ 4 27. (2 x3 3x2 2) (6 x2 4 x 5) (2 x3 3x2 2) (6 x2 4 x 5) 29 28. Solve the system: x yz 2 ( ____, ____, ____ ) 2 x y z 1 x 2z 5 30. Graph. y x 2 3 Simplify: 2 x(4 x 2 3) ___________ 3x 2 (5 x 1) _______________ 32. Multiply: 31. Multiply: . (6 x 1) _________________ 2 (2 x 1)( x2 6 x 3) _____________________ (4 x 7)2 _________________ 33. Simplify: 4 x 2 y 4 2 xy 3 3xy 6 st 34. Divide: 1 by long 5 xy 2 10 x 2 y 6 15 x3 y 4 3x 2 6 x 2 10 x 4 2nd by synthetic 8 x3 6 x 2 x 3 x 1 5 35. Solve and graph the Solution Set. 36. Solve and graph the solution set. 4x 3 9 or 4 x 3 11 37. 3x 4 17 38. Solve by any method 4 x 10 y 3 2x y 5 x 39. ( x 3)5 (2 x b)4 y 40. Factor each expression. 12 x2 71x 6 x4 13x2 36 4 x3 100 x x3 125 27 x3 64 y3 2 x2 7 x 15 Factor by grouping cx cy dx dy _______________ ax2 bx2 4a 4b _______________ 6 i17 _____ 41. 42. (3 2i )(5 7i ) i 27 _____ i 36 _____ (4 2i )(4 2i ) 43. 3 4i 44. x2 8 3 3 6 2i 46. Graph y 2 x 2 4 x 7 45. 3 7i 5 4i Which direction does the graph open? ______ Find the vertex V (___, ___) Write the equation for the axis of symmetry. Find the y-int. 47. 9 x2 7 4 ___, ___ 7 48. Identify the solutions to the following quadratic equation by using the given graph. 49. Write a quadratic equation in standard form with solutions, x 3 and x 4 . Use integers for a, b and c. x2 4 x 3 0 50. Write a quadratic equation in standard 2 and x 5 . form with solutions, x 3 Use integers for a, b and c. ___ x ___ and ___ x ___ 51. Solve by factoring x2 8x 0 2 x2 5x 3 0 x2 10 x 25 5x2 20 x x2 72 x x 2 81 8 Use synthetic substitution to find the given value for each function. Given a polynomial, determine if the binomial is a factor. 52. 2 x3 6 x2 x 15 for f (3) 54. x3 6 x2 x 30, x 3 53. 3x4 2 x3 x2 2 for f (2) 55. x3 6 x 2 11x 6, x 2 Solve each system. 56. 6x – y +2 z = 8 2x + 3y – z = -9 4x +2y +5z + 1 57. 5x - 6y + 2z = 21 2x + 3y - 3z = -9 -3x + 9y – 4z = -24