In this lesson, you will learn how to use the vertex form of a quadratic to determine the maximum or minimum value of a function and to solve problems.

When you finish this lesson, you will be able 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 will help you reach those goals:

• 9.11.1: Maximum and Minimum Value of a Function
• 9.11.2: Does the Vertex Represent the Minimum or Maximum Value?
  • 9.11.2: Self Check
  • 9.11.2: Additional Resources
• 9.11.3: Comparing Maximums between Quadratics
  • 9.11.3: Self Check
  • 9.11.3: Additional Resources
• 9.11.4: Maximum, Minimum, and Analyzing the Vertex

After that, you'll practice and review.

• 9.11.5: Practice
• 9.11.6: Lesson Summary