SOL Prep Function Practice

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input. In other words, for every x-value, there is one and only one y-value.

Front

How can you determine if a set of ordered pairs represents a function?

Back

A set of ordered pairs represents a function if no two pairs have the same first element (x-value) with different second elements (y-values).

Front

Does the table below represent a function? (Example: x: 1, 2, 2, 3; y: 4, 5, 6, 7)

Back

No, because the x-value '2' is associated with two different y-values (5 and 6).

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Back

5

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Back

7

Front

What is the vertical line test?

Back

The vertical line test is a method to determine if a curve is a function. If a vertical line intersects the curve at more than one point, then the curve is not a function.

Front

What does it mean for a relation to be not a function?

Back

A relation is not a function if at least one input (x-value) is associated with more than one output (y-value).

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Back

9

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21

Front

If a table has the following pairs: (1, 2), (2, 3), (3, 4), (1, 5), does it represent a function?

Back

No, because the input '1' is associated with two different outputs (2 and 5).