Function or Not?

Front

Is this graph a function or not a function?

Back

Function

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

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

Back

Yes, because each x-value has only one y-value.

Front

If a relation has the pairs (1, 2), (1, 3), is it a function?

Back

No, because the x-value 1 has two y-values.

Front

What is a vertical line test?

Back

A method to determine if a graph represents a function; if a vertical line crosses the graph more than once, it is not a function.

Front

Can a function have the same y-value for different x-values?

Back

Yes, a function can have the same y-value for different x-values.

Front

What is the domain of a function?

Back

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

Front

What is the range of a function?

Back

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

Front

Is the relation {(2, 3), (3, 4), (2, 5)} a function?

Back

No, because the x-value 2 has two y-values.