1. Pre-Algebra Mrs. Fisher
Chapter 9 Review
Pre-Algebra
Mrs. Fisher

2. Use the graph to write the ordered pair for each point
Use the graph to write the ordered pair for each point. 1) P 2) L 3)J 4)M 5) N

3. 1. (2, -4) 2. (-4, 4) 3. (3,4) 4. (-1, 3) 5. (-3, -4)

4. {(2,0), (2,2), (2,4), (2,6)}
Determine whether the relation is a function. Write either function or relation to answer.

5. Relation

6. {(1,12), (4,18), (7,22), (10, 28)}
Determine whether the relation is a function. Write either function or relation to answer.

7. Function

8. Determine whether this is a relation or a function.

9. Relation (use vertical line test)

10. Determine whether this is a relation or a function.

11. Function (use vertical line test)

12. Determine whether this is a relation or a function.
Domain
Range
Determine whether this is a relation or a function. -2 -1 1 2 4 7 8 11

13. Function

14. The relation {(4,1), (5,3), (8,-2), (-9, 3)} is a function
The relation {(4,1), (5,3), (8,-2), (-9, 3)} is a function. Write an ordered pair that would make the relation NOT a function.

15. (any pair where the domain (x) has two different ranges (y); Examples: (5,5), (8,3)

16. Solve the function.

17. Answers:

18. Which equation corresponds to the table of ordered pairs?

19. Answer: F

20. Find the slope.

21. Answer: F

22. State the slope and the y-intercept of 6x – 16y = 48

23. Answer: m= b= (0, -3)

25. Answer:

26. Find the slope of the line that passes through L (5, -6), M (9,6)

27. Answer: 3

28. Find the slope.

29. Answer: - 1

30. Find the constant rate of change.

31. Answer: 5 3

32. Find the constant rate of change and interpret it’s meaning.

33. Answer: 2; For every two stepping stones added, the path becomes one meter longer.

34. State the slope and y-intercept of the line. y = 2 3 x -1

35. M= b= -1

36. Graph the following line: y= - 1 4 x + 8

37. Answer: m= -1/4 b= 8 (0,8)

38. Graph the equation.

39. Answer: m= -18/1 b= 675 (0,675) -I used each cube as 100!

40. Problem-Solving
Review

41. Mrs. Fisher needs to rent a speaker system for upcoming 6th grade promotions. The fee from Best Buy involves a $120 fee plus $30 a day. Talking Systems Inc. offers a lower flat rate of $100, but a higher daily rental fee of $50 a day. The equations for both companies are below.
Scenario
Best Buy
Talking Systems Inc.
C= 30d + 120
C= 50d +100

42. Mrs. Fisher needs to rent a speaker system for upcoming 6th grade promotions. The fee from Best Buy involves a $120 fee plus $30 a day. Talking Systems Inc. offers a lower flat rate of $100, but a higher daily rental fee of $50 a day. The equations for both companies are below.
Part 1: Mrs. Fisher will rent the speakers for 6 days. Determine which company should be used to rent the equipment based on the cost of a 6 day rental.
Best Buy
Talking Systems Inc.
C= 30d + 120
C= 50d +100

43. Best Buy
Talking Systems Inc.
C= 30d + 120
C= 50d +100
Answer: Best Buy would be the better choice since it is $100 cheaper for 6 days.
Determine the cost of both companies. ‘d’ is the amount of days. Plug into each equation. Best Buy: C= 30(6) = = $ Talking Systems: C= 50 (6) = =$400.00

44. Mrs. Fisher needs to rent a speaker system for upcoming 6th grade promotions. The fee from Best Buy involves a $120 fee plus $30 a day. Talking Systems Inc. offers a lower flat rate of $100, but a higher daily rental fee of $50 a day. The equations for both companies are below.
Part 2: Would Best Buy always be the best choice? Explain your thinking.
Best Buy
Talking Systems Inc.
C= 30d + 120
C= 50d +100