1 / 19

Lesson 1-3, page 19

Lesson 1-3, page 19. Agenda Sept. 23. Journal Check Homework. Notes for section 1-4. Assignment 1-4 Foldable (counts as quiz score). Notes Warm-up: Find the solution set to 2x – 1 ≥ 9 if the replacement set is x = {4, 5, 6, 7}. Check x = 4 2x – 1 ≥ 9 2(4) – 1 ≥ 9 8 – 1 ≥ 9

miette
Download Presentation

Lesson 1-3, page 19

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Lesson 1-3, page 19

  2. Agenda Sept. 23 • Journal • Check Homework • Notes for section 1-4 • Assignment 1-4 • Foldable (counts as quiz score)

  3. Notes Warm-up: Find the solution set to 2x – 1 ≥ 9 if the replacement set is x = {4, 5, 6, 7}. Check x = 4 2x – 1 ≥ 9 2(4) – 1 ≥ 9 8 – 1 ≥ 9 7 ≥ 9 x = 4 is not a solution Check x = 5 2x – 1 ≥ 9 2(5) – 1 ≥ 9 10 – 1 ≥ 9 9 ≥ 9 x = 5 is a solution Solution set: {5, 6, 7}

  4. Lesson 1-4learning target: Apply inverse and identity properties

  5. PROPERTY: a + 0 = a EXAMPLE: If n + 0 = 8, then n = ? (n = 8) Additive Identity

  6. PROPERTY: a + -a = 0 EXAMPLE: If n + 5 = 0, then n = ? (n = -5) Additive Inverse

  7. PROPERTY: a • 0 = 0 EXAMPLE: If 7n = 0, then n = ? (n = 0) Multiplicative Property of Zero

  8. PROPERTY: a • 1 = a EXAMPLE: If 12n = 12, then n = ? (n = 1) Multiplicative Identity

  9. PROPERTY: a • 1/a = 1 EXAMPLE: If 3n = 1, then n = ? (n = ⅓) Multiplicative Inverse

  10. How do you remember which is which? • Hint #1: Which operation is used? EX: Additive = + Multplicative = x • Hint #2: Inverse means “opposite” EX: Additive inverse means “add the opposite” • Hint #3: Identity means the original number stays the same. EX: Multiplicative identity means multiply by something to get the same number you start with

  11. Time for Practice! In each of the following examples, identify n and name the property that is being used. Write the letter of the correct answer on your gel board

  12. A. n = 0, Additive Identity Property B. n = -7, Additive Inverse Property C. n = -7, Multiplicative Inverse Property D. n = 1/7, Multiplicative Inverse Property If n + 7 = 0, then n = ?

  13. A. n = 0, Additive Identity Property B. n = -8, Additive Inverse Property C. n = 0, Multiplicative Property of Zero D. n = -8, Multiplicative Inverse Property If 8n = 0, then n = ?

  14. A. n = 1, Multiplicative Identity Property B. n = 0, Additive Inverse Property C. n = -13, Additive Inverse Property D. n = 0, Additive Identity Property If n + 13 = 13, then n = ?

  15. A. n = 1, Multiplicative Identity Property B. n = ¼ , Multiplicative Inverse Property C. n = -4, Additive Inverse Property D. n = ¼ , Multiplicative Identity Property If 4n = 1, then n = ?

  16. Check for Understanding

  17. Assignment 1-4B: Page 23 #’s 12-13, 16-19, 22-29 Directions for 24-29: evaluate only

  18. Place your name on the front of your foldable and write the page titles as shown below. You can do the pages with the arrows.

More Related