Determining if a Relation is a Function or Not

This lesson teaches how to identify functions by analyzing mappings, T charts, ordered pairs, and graphs. It explains that functions are special relations where each domain element maps to exactly one range element. The lesson covers common misconceptions, such as the uniqueness of range values, and introduces the vertical line test for graph analysis.

What should you look for when analyzing a T chart to determine if it represents a function?

Explain why all range values do not need to be unique in a function.