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Lesson 1-5 Pages 28-32 PowerPoint Presentation
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Lesson 1-5 Pages 28-32

Lesson 1-5 Pages 28-32

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Lesson 1-5 Pages 28-32

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  1. Lesson 1-5 Pages 28-32 Variables and Equations

  2. What you will learn! • How to identify and solve open sentences. • How to translate verbal sentences into equations.

  3. Vocabulary

  4. What you really need to know! An equation that contains a variable is called an open sentence. A value that makes the sentence true is called a solution.

  5. Properties of Equality:

  6. Balance Example!

  7. Example 1: Find the solution of: 44 + p = 53. Is it 11, 9, or 7? p is 9 ; p = 9

  8. Example 2: Which value is the solution of 4x – 1 = 11? A 5 B 4 C 3 D 2 C 3

  9. Example 3: Solve the equation mentally. 7x = 56 x = 8

  10. Example 4: Solve the equation mentally. x – 15 = 40 x = 55

  11. Example 5: Name the property shown by the statement. If 3x + 1 = 10, then 10 = 3x + 1. Symmetric

  12. Example 6: Name the property shown by the statement. If z + 6 = 8 and 8 = 2 + 6, the z + 6 = 2 + 6. Transitive

  13. Example 7: Define a variable. Then write an equation and solve. The quotient of a number and four is nine. n ÷ 4 = 9 n = 36

  14. Page 30 Guided Practice #’s 3-13 Link to Pre-Made Lesson

  15. Read: Pages 28-30 with someone at home and study examples!

  16. Homework: Pages 31-32 14-46 even 48-51, 54-55, 58-59, 61-73 Lesson Check 1-5

  17. Page 725 Lesson 1-5

  18. Lesson Check 1-5