In this lesson, you will be introduced to function notation as a more concise and precise way to represent functions. Further, you will learn about the relationship between input and output.

When you finish this lesson, you will be able to:

• Use function notation to express functions that have specific inputs and outputs.
• Explain what function notation is and why it exists.
• Explain a statement written in function notation in terms of a situation.

Here are the activities that will help you reach those goals:

• 4.2.1: Interpreting Graphs to Answer Questions
• 4.2.2: Interpreting Statements Written in Function Notation
  • 4.2.2: Self Check
  • 4.2.2: Additional Resources
• 4.2.3: Finding a Unique Output for Each Input
  • 4.2.3: Self Check
  • 4.2.3: Additional Resources
• 4.2.4: Understanding Function Notation Using Application Problems

After that, you’ll practice and review.

• 4.2.5: Practice
• 4.2.6: Lesson Summary