1. Algebra Midterm Jeopardy

2. Algebra Midterm Jeopardy
ch2 ch3/7 ch 6 ch 7 ch 8 other Final Jeopardy

3. Chapter point
-4(3x – 8) = 2(4x + 12)

4. Chapter point answer

5. Chapter 2 2 points Daily Double!
Solve for m: 4mn – 6 = 14

6. Chapter 2 2*2 points answer

7. Chapter points

8. Chapter points answer

9. Which equation is NOT equivalent to:
Chapter points
Which equation is NOT equivalent to:
3p -2 = 6p + 4?
3p = 6p + 6
-3p – 2 = 4
-6 = 3p
3p = 6

10. Chapter 2 4 points answer 3p -2 = 6p + 4 -2 = 3p + 4 -6 = 3p -2 = p
3p = 6p C. -6 = 3p
-3p = = p
p = -2
-3p – 2 = 4 D. 3p = 6
-3p = p = 2

11. Chapter 3/ point

12. -3x + 3 > -9 -3x > -12 x < 4 C
Chapter 3/ point answer
-3x + 3 > -9 -3x > -12 x < 4 C

13. Chapter 3/ points

14. Chapter 3/7 2 points answer

15. Chapter 3/7 3 points

16. Chapter 3/7 3 points answer

17. Chapter 3/7 4 points

18. Chapter 3/7 4 points answer

19. Chapter point
Graph:

20. Chapter 6 1 point answer (out of the symbol – 2 means down 2)
(in symbol x – 3 means right 3)

21. Chapter points
State the slope and y –intercept of each equation. Would the lines be parallel, perpendicular, or neither? How can you tell?

22. Chapter points answer

23. Chapter points
State the x and y intercepts of the line: 8x = 12y – 16

24. Chapter points answer

25. Chapter points

26. Chapter points answer

27. 4x – 2y = 16 3y = 6x – 24 Chapter 7 1 point
How many solutions does the following system of linear equations have?
4x – 2y = 16
3y = 6x – 24

28. Chapter point answer
4x – 2y = 16 3y = 6x y = -4x + 16 y = 2x – 8 y = 2x – 8 The system has infinitely many solutions – the slopes and the y-intercepts are the same, so the lines are coincident (same line!)

29. Chapter points
Solve:
24x + 2y = 52
6x – 3y = -36

30. Chapter points answer
24x + 2y = 52 24x + 2y = 52 6x – 3y = -36 *-4 -24x + 12y = y = 196 y = 14 24x + 2(14) = 52 24x + 28 = 52 24x = 24 x = 1 (1, 14)

31. Chapter points
A company sells brass and steel machine parts. One shipment contains 3 brass and 10 steel parts and costs $48. A second shipment contains 7 brass and 4 steel parts and costs $54. Find the cost of each machine part.

32. Chapter points answer
3B + 10T = 48 *2 6B + 20T = 96 7B + 4T = 54 *-5 -35B – 20T = B = -174 B = 6 3(6) + 10T = T = 48 Brass $6 10T = 30 Steel $3 T = 3

33. Chapter points
Compare the solutions of the following 2 systems of equations:

34. Chapter 7 4 points answer The x and the y values are both the same
10x – 5y = x – 5y = 25
x – y = 15 * x + 5y = – y = 15
5x = y = 25
x = y = -25
-10x + 5y = x + 5y = -25
2x – 2y = *5 10x – 10y = x – 2(-25) = 30
-5y = x +50 = 30
y = x = -20
x = -10
The x and the y values are both the same

35. Chapter point
5x0y-4

36. Chapter point answer

37. Chapter points
(5x5)(3y6)(3x2)

38. Chapter points answer
(5x5)(3y6)(3x2)
45x7y6

39. Chapter points
(-4xy5z3)2

40. Chapter points answer
(-4xy5z3)2 = 16x2y10z6

41. Chapter points

42. Chapter points answer

43. Other 1 point

44. Other 1 point answer
The definition of a function is: each input (x) gives exactly one output (y). This is NOT a function because the input of 75 does not give exactly one output (it gives 12.5 and 13)

45. Other 2 points
State the domain and range of the graph. How would the domain and range change if the graph had arrows on both ends?

46. Other 2 points answer

47. Other 3 points
The perimeter of a rectangle is 276 feet. The length of the rectangle is 3 more than twice the width. Find the length and width.

48. other 3 points answer W = 45 The perimeter is 276 2L + 2W = 276
Length is 3 more than twice width L = 2W + 3
2(2W + 3) + 2W = L = 2(45) + 3
4W W = L = 93
6W + 6 = 276
6W = 270
W = 45

49. Other 4 points
State the domain and range:

50. Other 4 points answer
Domain: all real numbers Range: y ≤ 3

51. Final Jeopardy
The length of a rectangle is 5 times the width. The perimeter is 54 inches. Find the length and width.

52. Final Jeopardy answer Length = 22.5 inches width = 4.5 inches
54 = 2(W) + 2(5W)
54 = 12W
4.5 = W
L = 4.5(5) = 22.5
Length = 22.5 inches width = 4.5 inches