Practice

The graphs below are all of the form y = ax2.

  1. Which of the graphs have a value of a < 0?

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    If the value of a is less than 0, will the graph open upward or downward? Close Pop Up

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    Graphs I and IV Close Pop Up

  2. Which graph appears to have the largest |a|?

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    Which graph appears to be the narrowest? Close Pop Up

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    Graph II Close Pop Up

  3. List the graphs in order from the greatest value of a to the least value of a.

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    The narrowest graph that opens upward will have the greatest value of a, and the narrowest graph that opens downward will have the least value of a. Close Pop Up

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    Graph II, Graph III, Graph I, Graph IV Close Pop Up