Describe the Functional Relationship Between Quantities


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Describe the behavior of this function: as x increases, what happens to y?

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1. You see on the graph of a function that as x increases, y decreases at a constant rate. What will the graph look like?

2. Consider the function y = x + 2. Describe the functional relationship between x and y in this function.

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About This Quiz & Worksheet

This quiz/worksheet combo can help check your understanding of the functional behavior of x and y when represented on a graph and in word problems.

Quiz & Worksheet Goals

The questions on this quiz will assess your ability to:

  • Determine what happens to the function y as x increases
  • Describe the functional relationship between x and y on a graph
  • Identify what a graph would look like if x increases and y decreases

Skills Practiced

Complete this quiz to see how well you can practice the following skills:

  • Problem solving - use acquired knowledge to solve the practice problems on the function of x and y on a graph
  • Knowledge application - use your knowledge to answer questions about the behavior of x and y as one increases or decreases
  • Information recall - access what you've learned regarding the functional relationship between x and y

Additional Learning

You can learn more about functional relationships by reviewing the corresponding lesson titled Describe the Functional Relationship Between Quantities. The following objectives are addressed in the lesson:

  • Describe what a functional relationship is
  • Explain how to describe functional relationships using graphs and words
  • Discuss how to identify different types of functional relationships on a graph
  • Examine examples of functional relationships
Final Exam
Chapter Exam
Functional Relationships: CCSS.Math.Content.8.F.B.5
Chapter too short for exam