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Alg1 lesson 6-1 and 6-2
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Alg1 lesson 6-1 and 6-2

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Transcript

  • 1. Solve, then check your solution.
    0
    77
    0 – 12 > 65
    – 12 > 65
    Example 1-1a
  • 2. Solve and graph
    y21
    0
    21
    Example 1-2a
  • 3. Solve, then graph the solution.
    -9
    0
    Example 1-3a
  • 4. Solve
    Seven times a number is greater than six times that number minus two.
    Seven timesa number
    is greaterthan
    six timesthat number
    minus
    two.
    7n
    6n
    2
    >

    Example 1-5a
  • 5. True or False?
    5 > -3
    True
    Now multiply both sides by 2
    5 > -3
    2(5) > 2(-3)
    10 > -6
    True
    True or False?
    5 > -3
    True
    Now multiply both sides by -2
    5 > -3
    -2(5) > -2(-3)
    -10 > 6
    False
  • 6. 5 > -3
    2(5) > 2(-3)
    5 > -3
    -2(5) > -2(-3)
    10 > -6
    True
    -10 6
    >
    <
    False
    True
    If you multiply or divide both sides of an inequality by a negative number, reverse the inequality sign.
  • 7. Solve. Graph the solution
    0
    36
    Example 2-1a
  • 8. Solve and graph the solution:
    -17
    0
    Example 2-5a
  • 9. Solve and graph the solution
    0
    5
    Example 2-4a
  • 10. 6 ÷
    6 ·
    = -8
    Example 2-2a