Is it a Function or not?

Front

Is this graph a function or not a function?

Back

Function

Front

Is this a Function?

Back

Yes

Front

What is the definition of function?

Back

Every input has only ONE output

Front

Is the relation {(1,5),(1,7),(3,9),(4,11)} a function?

Back

No

Front

Is this a Function?

Back

Yes

Front

What is a function?

Back

A relation where each input has exactly one output.

Front

What is the 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 output for different inputs?

Back

No, each input must have a unique output.

Front

What is an example of a function?

Back

f(x) = 2x + 3 is a function.

Front

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

Back

{(1,2), (1,3)} is not a function because the input 1 has two different outputs.