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Algebra 1

9.11.6 Lesson Summary

Algebra 19.11.6 Lesson Summary

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In this lesson, you learned how to:

  • Find the maximum or minimum of a function by writing the quadratic expression that defines it in vertex form.
  • Explain why the vertex is a maximum or minimum when given a quadratic function in vertex form.

Here are the activities that helped you reach those goals:

  • 9.11.1: Maximum and Minimum Value of a Function
    • In this activity, you reviewed the meaning of maximum or minimum value of a function. Then you practiced interpreting the language related to maximum and minimum values of functions.
  • 9.11.2: Does the Vertex Represent the Minimum or Maximum Value?
    • In this activity, you used the vertex form to find out if a vertex represents the minimum or the maximum value of each function.
    • 9.11.2: Self Check
    • 9.11.2: Additional Resources
  • 9.11.3: Comparing Maximums between Quadratics
    • In this activity, you were given two functions in different forms. One was graphed, and the other was in factored form. You used these two pieces of information, without creating a graph of the function in factored form, to determine the maximum value of each one.
    • 9.11.3: Self Check
    • 9.11.3: Additional Resources
  • 9.11.4: Maximum, Minimum, and Analyzing the Vertex
    • In this activity, you found the vertex of the graph of a quadratic function and then determined if the yy-coordinate of the vertex corresponded to a maximum or a minimum value of the function.

After these activities, you completed the following practice:

  • 9.11.5: Practice

Checking In

On a scale of 1 to 5, how confident do you feel about the learning goals of this lesson?

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