Functions vs Non Functions Graphs

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.

• Yes, because each x-value has only one y-value paired with it.

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

• No, because each x-value has only one y-value paired with it.

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

Which of these relations is a function?

• 
• 
• 
• 

• Function
• Not a Function

• Function
• Not a Function

Which set of ordered pairs represents a function?

• <(3, 2), (4, 4), (6, 3), (4, 5)>

• <(4, –3), (4, –1), (4, 3), (4, 6)>

• <(–4, 4), (–2, 4), (1, 4), (5, 4)>

• <(–3, –3), (–2, –4), (–2, –1), (–1, –5)>

• Function
• Not a Function

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

• Function

• Not a Function

• Quadratic

• Square Root

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