October 3

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October 3

  1. 1. Class Notes/Practice Problems
  2. 2. Warm-Up1. 2 + 5|3 - 7|=2. (5 + 3)2 - |5 - 27 ÷ 3|=3. 2 + (7 + |24 - 5 • 6|) =4. We are half way through the first quarter. Write a fractionshowing the part of the school year we have finished. 5. Write & Solve a 1-step equation: 6. Write & Solve a 2-step equation 7. Write & solve an equation with distribution
  3. 3. Class Notes/Practice Problems Equations with DecimalsStep 1: Combine any constants if easierStep 2:Step 3: Solve as Usual 1. 4.6 = 4m - 3.4 2. .25m + .1m = 9.8 3. .5(x -12) = 4
  4. 4. Class Notes/Practice Problems Absolute Value Equations Know The Rules:|x|= 1; x = 1, -1Rule: Because the value inside could be positive ornegative, two equations must be written and solved.Solve:|2x + 5| = 11, Then graph the solution setThe two equations are:1. |2x + 5| = 11 2. |2x + 5| = - 11 2x = 6; x = 3 2x = -16; x = -8
  5. 5. Absolute Value Equations Ex. 2: 4|2 - x| = 16The two equations are: 1). 4|2 - x| = 16 2). 4|2 - x| = - 161). 8 - 4x = 16; - 4x = 8; x = - 2 2). 8 - 4x = - 16; - 4x = -24; x = 6 Ex. 3: |2x - 3|+ 2 = 11; Write the two equations Solve the 1st equation: |2x - 3|+ 2 = 11; 2x =12; x = 6 Solve the 2nd equation: |2x - 3|+ 2 = -11; 2x = -10; x = - 5
  6. 6. Class Work: Page 25; AllPage 37; odd or even
  7. 7. 3rd period:move girls and Daniel, Richard to front of classroom
  8. 8. 7. Write & solve an equation with variables on both sides

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