Standard Form ALGEBRA 1 LESSON 6 3 pages

Standard Form ALGEBRA 1 LESSON 6 -3 pages 301– 303 Exercises 1. 18; 9 13. 16. 19. horizontal 3. – 6; 30 20. vertical 21. horizontal 4. 3 ; – 3 22. vertical 2. 3; – 9 2 9 3 5. – ; – 2 2 14. 23. 17. 6. – 8; 12 7. 6; 4 8. 4 ; – 2 7 24. 15. 9. – 5; 4 18. 10. B 11. C 12. A 6 -3

Standard Form ALGEBRA 1 LESSON 6 -3 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. – 3 x + y = 1 4 x – y = 7 x – 2 y = 6 – 2 x + 3 y = 15 – 3 x – 4 y = 16 – 4 x – 5 y = 35 – 14 x + 4 y = 1 4 x + 10 y = 1 3 x + y = 0 36. a. Answers may vary. Sample: x = no. of cars; y = no. of vans or trucks b. 5 x + 6. 5 y = 800 37. a. Answers may vary. Sample: x = time walking; y = time running b. 3 x + 8 y = 15 38. 40. 41. 42. 39. 6 -3

Standard Form ALGEBRA 1 LESSON 6 -3 43. 4 51. y = – x – 3 47. a. 3 x + 7 y = 28 b. 7 oz 5 44. 45. 48. 4. 29 x + 3. 99 y = 30 49. 4 y = x + 10 5 46. 50. 6 7 y = x + 3 6 -3 5 9 52. y = x – 5 3

Standard Form ALGEBRA 1 LESSON 6 -3 16 53. y = – x – 8 11 1 2 54. y = x – 9 3 62. a. 200 s + 150 a = 1200 55. Answers may vary. b. Sample: slope-intercept form when comparing the steepness of two lines; standard form when Answers may vary. making quick graphs Sample: 56. Answers may vary. s = $2. 00, a = $5. 33; Sample: 0 x + 0 y = 0, s = $3. 00, a = $4. 00; no linear equation exists. s = $6. 00, a = $0. 00 57. – 3 x instead of 3 x s = $3. 00 and a = $4. 00 because 58. y = 2 they are whole dollar 59. y = – 2 amounts, and adults 60. x = 1 pay more. 61. x = – 2 3 63. y = x + 4 5 6 -3

Standard Form ALGEBRA 1 LESSON 6 -3 square 66. C 67. H 1 68. [2] y = x + 1; 4 x – 4 y = – 4 [1] correct slopeintercept equation 69. [4] a. 48 x + 56 y = 2008 b. 64. 65. a. [3] correct equation and graph [2] wrong equation, but a corresponding correct graph [1] Correct equation only 70. yes 71. no 72. no 1 73. 36 2 2 b. – ; – 3 3 c. Answers may vary. Sample: The x- and y-intercepts of 2 x + 3 y = 18 are 3 times those of 2 x + 3 y = 6. c. Answers will include 74. 1 12 three of the following: 75. 4 1 Supreme, 35 Prestige; 76. 2. 25 8 Supreme, 29 Prestige; 15 Supreme, 23 Prestige; 77. – 0. 5 22 Supreme, 17 Prestige; 29 Supreme, 11 Prestige; 78. – 21 36 Supreme, 5 Prestige 6 -3