Name: ___________________Tech Math I – Chapter 3 Mid - Review

Find the slope and y – intercept of each line.

1. y = 3x – 9 2. y = -2x – 7

3. y = -x + 12 4. y = 5x

5. 4x + y = -12 6. 2x + 2y = 8

7. 8x - 2y = 16 8. -y = 3x + 2

Find the slope of a line given two points.

9. (3, 2) and (1, 5) 10. (-1, 2) and (9, -4)

11. (-2, 7) and (0, 19) 12. (8, 4.5) and (-4, 3.5)

13. (6, -4) and (2, 18) 14. (1, -2) and (7, 8)

Find the line parallel and passes thru the given point.

15. m = 2, (0, 4) 16. m = -3, (2, 5)

17. m = ½, (-4, 1) 18. m = -1/3, (-1, 6)

19. y = 4x – 7, (-3, 0) 20. y = -2x + 12, (-2, 4)

Name: ___________________Tech Math I – Chapter 3 Mid - Review

Find the line perpendicular and passes thru the given point.

21. m = 3, (1, 6) 22. m = -1, (2, 6)

23. m = ½, (-2, 5) 24. m = -1/3, (-7, 7)

Find the intersection of the following pairs of lines.

25. y = 12x + 2y = -4x + 10

26. y = 6x – 3 y = -x + 1

27. y = -x – 6y = 4x - 12

28. y = 12x + 12 y = 3x - 6

Use the elimination method to find the intersection of the following pairs of lines.

29. 3x + 2y = 6 x – 2y = 6

30. 2x + 5y = -22 10x + 3y = 22

31. 3x + 2y = -9 -10x + 5y = -5

32. 4x + 5y = 15 6x - 4y = 11