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Chapter 21.3
Identifying Functions with Ordered Pairs: A Comprehensive Guide
Unlock the power of ordered pairs to identify functions. Master essential techniques like the vertical line test, explore real-world applications, and enhance your mathematical problem-solving skills.
What You'll Learn
Identify functions by checking for repeated x-values in ordered pairs
Apply the vertical line test to determine if a graph represents a function
Distinguish between inputs (x-values) and outputs (y-values) in relationships
Recognize that each input must have exactly one output for a function
Understand function notation and mapping diagrams
What You'll Practice
1
Analyzing ordered pairs to determine if they represent functions
2
Using the vertical line test on various graphs and curves
3
Creating and interpreting mapping notation diagrams
4
Identifying functions from tables, graphs, and coordinate lists
Why This Matters
Understanding functions is fundamental to all future math courses from algebra through calculus. You'll use function concepts in science, engineering, economics, and computer programminganywhere relationships between variables matter.
Before You Start — Make Sure You Can:
This Unit Includes
9 Video lessons
Practice exercises
Learning resources
Skills
Functions
Vertical Line Test
Ordered Pairs
Mapping Notation
Input-Output
Relations
Domain and Range
NY Curriculum Aligned
