# Domain and Range Worksheet 3 (with Answer Key)

Functions in mathematics can be compared to the operations of a vending (soda) machine. When you put in a certain amount of money, you can select different types of sodas. Similarly, for functions, we input different numbers and we get new numbers as the result. Domain and range are the main aspects of functions. In this worksheet, you will learn to find the domain and range of given functions and graphs.

## What is“Domain and Range”?

The domain and range are defined for a relation and they are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively.  A domain of a function refers to “all the values” that go into a function. The domain of a function is the set of all possible inputs for the function. The range of a function is the set of all its outputs.

This worksheet will help the students to learn about “Domain and Range” with the help of some relations and graphs.

## Instructions on how to use the “Domain and Range Worksheet 3 (with Answer Key)”

Use this math worksheet to carefully study the concepts of “Domain and Range”.

A 10-item activity is  given after the lesson in order to exercise the learned concept.

Towards the end of this worksheet, a reflective section is provided in order to help the learner think about their own thinking (metacognition) and assess how they performed in the lesson.

## Conclusion

At the end of this worksheet, the learner will effectively learn about “Domain and Range”.