Identifying Domain and Range Worksheet

What It Is:
The Identifying Domain and Range Worksheet helps students explore the foundational concept of domains (inputs) and ranges (outputs) in functions. Each table lists pairs of x and y values, and learners must determine all possible inputs (domain) and outputs (range).

Why Use It:
This worksheet enhances understanding of how functions map inputs to outputs and how to identify complete sets of x- and y-values. It builds critical algebra skills needed for graphing, analyzing, and interpreting relationships between variables in real-world and mathematical contexts.

How to Use It:
• Review the “Function Machines – Input and Output Rules” worksheet to recall how input-output pairs are generated from function rules.
• For each table, list all x-values under “Domain” and all y-values under “Range.”
• Identify patterns such as constant outputs or repeating values.
• Discuss how these patterns relate to function graphs and real-world data mapping.

Grade Level Suitability:
Best for Grades 6–8.
• Grade 6: Introduces domain and range with basic table data.
• Grades 7–8: Reinforces algebraic relationships and prepares for graph-based domain-range identification.

Target Users:
Ideal for teachers, students, and homeschool educators teaching functions, coordinate pairs, and algebra readiness. Perfect for both classroom exercises and independent practice.