Is the Relation a Function?

Front

What is a function?

Back

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

Tags

CCSS.8.F.A.1

Front

What is the definition of a relation?

Back

A relation is a set of ordered pairs, where each pair consists of an input (x) and an output (y).

Tags

CCSS.8.F.A.1

Front

How can you determine if a mapping is a function?

Back

A mapping is a function if no x-value is paired with more than one y-value.

Tags

CCSS.8.F.A.1

Front

What is the range of a function?

Back

The range is the set of all possible output values (y-values) of a function.

Front

What is the domain of a function?

Back

The domain is the set of all possible input values (x-values) of a function.

Front

Is the following mapping a function? {(1, 2), (1, 3)}

Back

Not a Function, because the x-value 1 has two different y-values (2 and 3).

Tags

CCSS.8.F.A.1

Front

Is the following mapping a function? {(2, 4), (3, 5), (4, 6)}

Back

Function, because each x-value has only one y-value associated with it.

Tags

CCSS.8.F.A.1

Front

What does it mean if a relation is not a function?

Back

It means that at least one x-value is paired with more than one y-value.

Tags

CCSS.8.F.A.1

Front

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

Back

Not a Function, because the x-value 1 has two y-values (2 and 4).

Tags

CCSS.8.F.A.1

Front

What is an example of a function?

Back

An example of a function is the equation y = 2x + 1, where each x-value gives a unique y-value.

Tags

CCSS.8.F.A.1