1. Chapter 7 Review!
Systems of Equations

2. THIS IS
JEOPARDY

3. With
Your
Host...
Mrs. Parker

4. Solve 2x2 Systems
Solve 3x3 Systems
Matrices
Applications
100
100
100
100
200
200
200
200
300
300
300
300
400
400
400
400
TEST INFO!

5. Solve the system
without a calculator
A 100

6. (2, 1)
A 100

7. Solve the system
without a calculator
A 200

8. No solution
A 200

9. A 300

10. A 300

11. A 400

12. A 400

13. Solve the system
without a calculator
B 100

14. (-3, 0, -6)
B 100

15. Solve the system
without a calculator
B 200

16. (2, 6, 1)
B 200

17. Solve the system
without a calculator
B 300

18. (-3, 6, 5)
B 300

19. Solve the system
without a calculator
B 400

20. Infinitely Many Solutions
(-a – 5, ½a + 4, a)
B 400

21. Perform the indicated operation without a calculator.

22. C 100

23. Perform the indicated operation without a calculator.

24. C 200

25. Find the inverse without a calculator.

26. C 300
C 300

27. Perform the indicated operation without a calculator.

28. C 400

29. Wilbur and Jimmy each improved their yards by planting hostas and geraniums. They bought their supplies from the same store. Wilbur spent $75 on 5 hostas and 10 geraniums. Jimmy spent $120 on 12 hostas and 14 geraniums. Find the cost of one hosta and the cost of one geranium.
D 100

30. D 100

31. D 200

32. D 200

33. The University of Georgia and Florida State University scored a total of 39 points during the 2003 Sugar Bowl. The points came from a total of 11 different scoring plays, which were a combination of touchdowns, extra – point kicks, and field goals, worth 6, 1, and 3 points respectively. The same numbers of touchdowns and field goals were scored. How many touchdowns, extra – point kicks, and field goals were scored during the game?
(Source: espn.com)
D 300

34. There were 4 touchdowns, 3 extra – point kicks, and 4 field goals during the game.

35. A small corporation borrowed $500,000 to build a new office building
A small corporation borrowed $500,000 to build a new office building. Some of the money was borrowed at 9%, some at 10%, and some at 12%. Use a system of equations to determine how much was borrowed at each rate if the annual interest was $52,000 and the amount borrowed at 10% was 2.5 times the amount borrowed at 9%.
D 400

36. The small corporation borrowed $100,000 at 9%, $250,000 at 10%, and $150,000 at 12%.

37. Thank You for Playing Jeopardy!
Study for your test tomorrow!
Chapter 7 TEST BREAKDOWN:
No Calc – 7 Questions Calc – 5 Questions
TOPICS INCLUDE
– Solving Systems of Equations using a variety of methods
Matrix Operations
Inverse Matrices
Determinants and Area of a Triangle
Cramer’s Rule
Applications