Solutions
Solutions to Try Its
1. 2. 3. 4. 5. . Excluded values are and . 6. 7. 8. 9. 10. Horizontal line: 11. Parallel lines: equations are written in slope-intercept form. 12.Solutions to Odd-Numbered Exercises
1. It means they have the same slope. 3. The exponent of the variable is 1. It is called a first-degree equation. 5. If we insert either value into the equation, they make an expression in the equation undefined (zero in the denominator). 7. 9. 11. 13. 15. 17. ; 19. ; when we solve this we get , which is excluded, therefore NO solution 21. ; 23. 25. 27. 29. 31. 33. 35. 37. Parallel 39. Perpendicular 41. 43. 45. 47. . Answers may vary. 49. . Answers may vary. 51. 53. Yes, they are perpendicular..
55. 30 ft
57. $57.50
59. 220 mi