Function/Non Function Flashcard 3

Front

Is this graph a function or not a function?

Back

Function

Front

Look at this graph. Is the relation a function?

Back

Yes

Front

What is the definition of function?

Back

Every input has only ONE output.

Front

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

Back

No

Front

Is the graph pictured a function?

Back

No

Front

What is a function?

Back

A relation where each input has exactly one output.

Front

What is a non-function?

Back

A relation where at least one input has multiple outputs.

Front

Example of a function: f(x) = 2x + 3. What is f(2)?

Back

7

Front

Example of a non-function: {(2,4),(2,5)}. Why is this not a function?

Back

The input 2 has two different outputs (4 and 5).

Front

What is the vertical line test?

Back

If a vertical line intersects a graph more than once, it is not a function.