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This gives a graph of a parabola which is the graph of a quadratic equation or function. The demonstration first includes classifying it as a parabola that is opening downward or upward. Then it…
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Single fractions set equal to each other forms a proportion. When presented with this, it can be "cross multiplied" to eliminate the fractions. The resulting equation has a term with the…
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Shows cross multipication of two single fractions set equat to each other to create a new equation that has no fractions and is then solvable by the typical methods.
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Another example of simplifying a fraction in parentheses raised to a power
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Just showiing how to locate and write down the x-intercepts and y-intecepts when looking at a graph
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Using the proportion %/100 = Amount/Base to plug in what's given to find what is asked for.
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Demonstrating why we can "cross muliply" a proportion to solve it, we then do that.
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