Definition of a Function Review

Front

Is the relation a function? Why?

Back

No, because the x-value 11 has two y-values pair with it.

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

Which set of values is a function? (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4)

Back

(6,-5) (7, -3) (8, -1) (9, 1)

Front

Is this graph a function or not a function?

Back

Function

Front

Is this table a function or not a function?

Back

Not a Function

Front

What is a function?

Back

A relation where each input has exactly one output.

Front

What is an example of a non-function?

Back

A relation where an x-value is paired with multiple y-values.

Front

How can you determine if a graph represents a function?

Back

Use the vertical line test: if a vertical line crosses the graph more than once, it is not a function.

Front

What is the domain of a function?

Back

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

Front

What is the range of a function?

Back

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