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Absolute Value and Graphing Inequalities Videos
Math Sketch 220 - "Inequalities" (12-17-15)
The following videos demonstrate how to graph one-variable inequalities on a number line. Examples include basic algebra, negatives, and absolute values.
- Graphing Number Line Inequalities - Video 1
- Introduction to graphing inequalities on a number line. (8 examples)
- Graphing Number Line Inequalities - Video 1
- Graphing Absolute Value Inequalities - Video 2
- Graphing absolute value equations on a number line. (6 examples)
- Graphing Absolute Value Inequalities - Video 2
- Describing Absolute Value Inequalities - Video 3
- Describing Number Line inequalities with absolute value expressions (3 examples)
- Describing Absolute Value Inequalities - Video 3
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Information
Amateur videos feature Lance and Oscar (the Dog). If you have a math question or want a video explanation, Contact Us!
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Information
- Number line
- origin, positive and negative values
- > vs <
- greater than vs greater than or equal
- Absolute value
- AND vs OR
- Critical Values
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Graphing Inequalities on a Number Line
3-Step Process:
1) Determine "Critical points"
2) "Open" or "Closed" circles
3) Test Regions and shade
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Connections
Notes, practice tests, & examples of number line inequalities
