Challenge #2 Use the vertex form of the quadratic function to plot five

parabolas, one through each set of color-coordinated

points

When you finish, press "Check My Work".

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Parabola

6h - 7 < 5
6h < 5

This means that 6 times h is less than 5.

h < 2 means that as long as h is less than 2, this inequality will be true.

A counterexample would be 1.

6h < 5
6(1) < 5
6 × 1 < 5
6 < 5

6 is not less than 5, therefore that inequality is not true and 1 proves to be a counterexample.