QTR 2: ALG U5 CW #3: Domain & Range

Front

What is the Vertical Line Test?

Back

A method to determine if a graph represents a function. If a vertical line intersects the graph at more than one point, it is not a function.

Front

What defines a function in terms of ordered pairs?

Back

A relation is a function if each input (x-value) has exactly one output (y-value).

Front

If the x-values of a set of ordered pairs repeat, what can be concluded?

Back

The relation is NOT a function.

Front

What is the definition of domain in a function?

Back

The set of all possible input values (x-values) for a function.

Front

What is the definition of range in a function?

Back

The set of all possible output values (y-values) for a function.

Front

How can you identify the domain of a function from a graph?

Back

By looking at the x-values that the graph covers.

Front

How can you identify the range of a function from a graph?

Back

By looking at the y-values that the graph covers.

Front

What does it mean if a graph has two outputs for one input?

Back

It is not a function.

Front

What is an example of a function?

Back

The set of ordered pairs {(1,2), (2,3), (3,4)} is a function because each x-value is unique.

Front

What is an example of a relation that is not a function?

Back

The set of ordered pairs {(1,2), (1,3), (2,4)} is not a function because the x-value '1' has two different y-values.