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Identifying Functions  Printable Worksheets
Identifying functions worksheets are up for grabs. Equip highschool students with this printable practice set to assist them in analyzing relations expressed as ordered pairs, mapping diagrams, inputoutput tables, graphs and equations to figure out which one of these relations are functions based on the pairing of the domain (x) and range (y).
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Identifying Functions  Relation  Ordered Pair
An input value and its corresponding output value make an ordered pair. Analyze each set of ordered pairs and state whether each relation is a function.

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Identifying Functions  Relation  Table
Examine the inputs (xcoordinates) and outputs (ycoordinates) keenly. The criterion for a relation to be a function is that each input should have only one output. Also, xcoordinates shouldn't be duplicated.

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Identifying Functions  Relation  Mapping
Mapping is a graphical representation of how the elements of the domain and range are paired. Onetoone and manytoone domainrange relations are functions, while onetomany are not.

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Inspect the graph to see if any vertical line drawn would intersect the curve more than once. If it does, the graph does not represent a function, else it does.

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When a relation is denoted as an equation, the dependent variable y is expressed in terms of x, the independent variable. For a relation to be a function, there should be one yvalue for any xvalue inserted.

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