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Review. Systems of Equations. 1. Solve by graphing :. x + y = 0 2x – y = -6. 1. Solve by graphing :. Answer: (-2, 2). x + y = 0 2x – y = -6. 2. Solve by Substitution:. x - 5y = 32 2x – 9y = 57. 2 . Solve by substitution:. Answer: (-3,-7). x – 5y = 32 2x – 9y = 57.

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  1. Review Systems of Equations

  2. 1. Solve by graphing: x + y = 0 2x – y = -6

  3. 1. Solve by graphing: Answer: (-2, 2) x + y = 0 2x – y = -6

  4. 2. Solve by Substitution: x - 5y = 32 2x – 9y = 57

  5. 2. Solve by substitution: Answer: (-3,-7) x – 5y = 32 2x – 9y = 57

  6. 3. Solve by Elimination: x + 7y = -28 3x – 5y = 20

  7. 3. Solve by Elimination: Answer: (0, -4) x + 7y = -28 3x – 5y = 20

  8. 4. Solve by graphing: x + 3y = -6 2x + 6y = 30

  9. 4. Solve by graphing: Answer: 0 x + 3y = -6 2x + 6y = 30

  10. 5. Solve by Substitution: x + y = 3 5x – 4y = 6

  11. 5. Solve by substitution: Answer: (2, 1) x + y = 3 5x – 4y = 6

  12. 6. Solve by Elimination: 2x - 3y = -2 9x – 10y = 12

  13. 6. Solve by Elimination: Answer: (8, 6) 2x - 3y = -2 9x – 10y = 12

  14. 7. Solve by your method of choice: At the local fast food restaurant, four burgers and three fries have a total of 2290 calories. Six burgers and two fries have 2560 calories. How many calories does each item contain?

  15. 7. Solve by your method of choice: Answer: Burgers = 310 Fries = 350 At the local fast food restaurant, four burgers and three fries have a total of 2290 calories. Six burgers and two fries have 2560 calories. How many calories does each item contain?

  16. 8. Solve by your method of choice: The Smith family went to the theater to see a movie. Adult tickets cost $12 and child tickets cost $9. If they spent $72 total and purchased 7 tickets, how many of each were purchased?

  17. 8. Solve by your method of choice: The Smith family went to the theater to see a movie. Adult tickets cost $12 and child tickets cost $9. If they spent $72 total and purchased 7 tickets, how many of each were purchased? Answer: Adults = 3 Children = 4

  18. 9. Solve by your method of choice: The cost of 12 bananas and 7 apples is $5.36. Eight bananas and 5 apples cost $3.68. Find the cost of each banana and each apple.

  19. 9. Solve by your method of choice: Answer: Banana = $0.26 Apple = $0.32 The cost of 12 bananas and 7 apples is $5.36. Eight bananas and 5 apples cost $3.68. Find the cost of each banana and each apple.

  20. 10. Solve by your method of choice: Isaac has 43 nickels and quarters in his wallet (it’s very heavy). If his total amount of change is worth $7.75, how many of each kind of coin does Isaac have?

  21. 10. Solve by your method of choice: Answer: Nickels = 15 Quarters = 28 Isaac has 43 nickels and quarters in his wallet (it’s very heavy). If his total amount of change is worth $7.75, how many of each kind of coin does Isaac have?

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