Functions and Not a Functions

Look at the table.

Is the relation a function?

• Yes

• No

Look at this set of ordered pairs: (4, 13), (1, 12), (6, 9)

Is this relation a function?

• Yes

• No

Look at the graph.

Is this relation a function?

• Yes

• No

Does this mapping diagram represent a function?

• No, because there are repeating input values

• Yes, because there are no repeating input values

Define this graph. Does it pass the vertical line test?

• Function

• Not a Function

• Linear

• Undefined

Does the graph represent a function? Does it pass the vertical line test?

• Yes, because the vertical line test shows there are no repeating input values

• No, because the vertical line test shows there are repeating input values

• No, because there are not enough dots to tell

• Yes because the dots are all  red

Define this graph. Does it pass the vertical line test?

• Function

• Not a Function

• Quadratic

• Square Root

• This is a Function
• This is Not a Function

Is this a function or not a function?

• Function

• Not a Function

• Yes
• No