. Grade 8, Illustrative icon
Task

Introducing Functions

Illustrative MathematicsVaries

The goal of this task is to motivate the definition of a function by carefully analyzing some different relationships. In some of these relationships, one quantity can be determined in terms of the other while in others this is not possible. In this way, students are led to see what is special about a function, namely that to each input there corresponds one and only one output.

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