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Monday Oct. 31, 2011

Homework: p.187 1-36. If y + 4 = -3, then y = 7. Is the solution correct ? How do you know?. Monday Oct. 31, 2011. Bellwork: . 13A. 13A. EQ: How do we use inverse operations to solve equations?. 13A. Review: An INVERSE OPERATION undoes an operation. It is the opposite operation.

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Monday Oct. 31, 2011

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  1. Homework: p.187 1-36 If y + 4 = -3, then y = 7. Is the solution correct? How do you know? MondayOct. 31, 2011 Bellwork: 13A

  2. 13A EQ: How do we use inverse operations to solve equations?

  3. 13A Review: An INVERSE OPERATION undoes an operation. It is the opposite operation.

  4. - What operation will we use to solve ADDITION equations? x + 8 = 3 y + 7 = -4 2 + p = 6 ? The inverse operation for addition is SUBTRACTION!

  5. - Example:

  6. - What will we SUBTRACT from both sides for each of these examples? Subtract 8 from both sides Subtract 7 from both sides Subtract 2 from both sides

  7. 13A • x + 8 = 3 • y + 7 = -4 • 2 + p = 6 CW #1 Solve each equation using the example below as a guide:

  8. Check your work… • 1) x = -5 • 2) y = -3 • 3) p = 4

  9. 13A In your notebook, write and complete the following sentence: To solve addition equations, we have to ___________________________ both sides.

  10. - Share your sentence with a partner. Do you both have the same sentence? How do you know if you’re correct?

  11. 13A What operation will we use to solve SUBTRACTION equations? x - 11 = -5 y - 9 = 4 p - 3 = -7 ? The inverse operation for subtraction is ADDITION!

  12. 13A Example:

  13. 13A What will we ADD to both sides for each of these examples? Add 11 to both sides Add 9 to both sides Add 3 to both sides

  14. 13A • x – 11 = -5 • y – 9 = 4 • p – 3 = -7 CW #2 Solve each equation using the example below as a guide:

  15. Check your work… • 1) x = 6 • 2) y = 13 • 3) p = -4

  16. Ticket Out the Door: Maria solved the following equation w - 5 = -8 Her solution was w = -13. Is Maria correct? How do you know?

  17. 13A Homework: p.187 Complete problems

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