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Published byVincent Long Modified over 9 years ago

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Warm Up

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

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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.

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How can you tell if a Relation is a Function? XY 12 35 61 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:

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NOT a Function X134673 Y245796 Domain:Range:

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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:

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NOT a Function Domain:Range:

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Examples for Tickets

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Function or Not a Function? X Y 2 -4 3 0 4 5

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Function or Not a Function? Domain and Range X Y__ 3 4 2 0 1 7

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Function or Not a Function?

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Function or Not a Function? Domain and Range

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Function or Not a Function?

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