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### Objective

Students will practice identifying the domain and range of a mathematical relation as well as classify a relation as a funciton based on its domain and range.

### Example Questions

**Directions** Identify the domain and range of the relations below:

{ (-1,2), (2, 51), (1, 3), (8, 22), (9, 51) } { (-5,6), (21, -51), (11, 93), (81, 202), (19, 51) }

For the relation below to be a function, X cannot be what values?

{ (12, 13), (-11, 22), (33, 101), (X ,22) }