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Explains where the distance formula originates, and then gives an example of its use in finding the distance between two points.
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Explains how the graphs and equations of vertical and horizontal lines are the same in some ways but how they differ as well.
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The first demonstration of the graph of a line from a linear equation.
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This shows how to factor by grouping when you have a 4 term expression.
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Special equations for horizontal or vertical lines.
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This video shows the third method for solving a system of linear equations - Elimination
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This video explains how to take a verbal description of calculation and express it in terms of algebra.
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