
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…


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…


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.


Another example of simplifying a fraction in parentheses raised to a power


Just showiing how to locate and write down the xintercepts and yintecepts when looking at a graph


Using the proportion %/100 = Amount/Base to plug in what's given to find what is asked for.


Demonstrating why we can "cross muliply" a proportion to solve it, we then do that.
