Warm Up. FUNCTIONS DEFINED Essential Question: How can you determine if a relation is a function?

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Presentation transcript:

Warm Up

FUNCTIONS DEFINED Essential Question: How can you determine if a relation is a function?

Key Terms Function: A relation where for every Input there is exactly ONE Output. Relation: A set or group of Ordered Pairs. Domain: The X-values or Input. Range: The Y-values or Output.

How can you tell if a Relation is a Function? XY For every X-value there is only 1 Y-value. A relation is NOT a function if an X-Value has 2 or more Y- Values. Domain:Range:

NOT a Function X Y Domain:Range:

Determining if a Graph is a Function A graph is a function if it passes the Vertical Line Test. If a vertical line is drawn anywhere on the coordinate plane, it should only touch the “function” once. Domain: Range:

NOT a Function Domain:Range:

Examples for Tickets

Function or Not a Function? X Y

Function or Not a Function? Domain and Range X Y__

Function or Not a Function?

Function or Not a Function? Domain and Range

Function or Not a Function?