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HOMEWORK REVIEW
HOMEWORK REVIEW
HOMEWORK REVIEW
SOLVE ABSOLUTE VALUE INEQUALITIES5.5
ABSOLUTE VALUE
• Absolute Value is the distance a number is from 0 on the number line.• You can see from the diagram that |4|=4 and that the |-4|=4
ABSOLUTE VALUE
• Try these
• |5|=• |-11|=• |-2|=• |6|=• |-7|=
NOW TRY THESE
• |what|=2
• |what|=7
• |what|=4
SOLVING ABSOLUTE VALUE• The key to solving absolute value problems is that you need to understand that what I s inside the absolute value can be positive or negative.• Get the | | by itself
• Rewrite it as two equations, one with positive value and one with the negative value
• Solve each equation. There will likely be two solutions.
EXAMPLE
• Solve: |x|=7
EXAMPLE
• Solve: |x – 3|= 8
EXAMPLE
• Solve: 3|2x – 7|-- 5 = 4
EXAMPLE
• Solve: |3x + 5| + 6 = 2
HOMEWORK
• p. 335: 3, 9, 11, 15-21 odd, 22, 23, 26, 27, 31-35 odd