Identifying Functions with Mapping Diagrams

The video tutorial explains how to determine if a mapping diagram represents a function. It reviews the definition of a function, emphasizing that each input must pair with exactly one output. The tutorial analyzes four choices, identifying which diagrams are functions and which are not. Choices A, B, and C are confirmed as functions, while choice D is not, as it maps one input to multiple outputs.

What is the significance of having exactly one output for each input in a function?

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How do you determine if a mapping diagram represents a function?

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