FUNCTIONS

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 does the vertical line test determine?

Back

The vertical line test determines if a graph represents a function. If a vertical line crosses the graph more than once, it is not a function.

Front

What are the x-values in a function called?

Back

The x-values are called the domain.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

What are the y-values in a function called?

Back

The y-values are called the range.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

What is the definition of domain?

Back

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

Front

What is the definition of range?

Back

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

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

Can a function have repeating x-values?

Back

No, a function cannot have repeating x-values; each x-value must correspond to only one y-value.

Tags

CCSS.8.F.A.1

Front

What is a mapping in relation to functions?

Back

A mapping shows how each element of the domain is paired with an element of the range.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

Front

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

Back

If a mapping is not a function, it means that at least one x-value is paired with more than one y-value.

Tags

CCSS.8.F.A.1

Front

Give an example of a function.

Back

An example of a function is f(x) = 2x + 3, where each x-value has a unique y-value.

Tags

CCSS.8.F.A.1