Intro to Functions (3a Skills Check)

Is this graph a function or not a function? 

• Function

• Not a Function

Is this graph a function or not a function? 

• Function

• Not a Function

Is this mapping a function or not a function? 

• Function

• Not a Function 

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.

Is this graph a function or not a function? 

• Function 

• Not a Function

Is this table a function or not a function? 

• Function

• Not a Function 

Does this relation represent a function?
(1,5), (1,6), (1,7), (1,8), (1,9)

• Yes

• No

You can identify a function from a graph by using the.....

• Horizontal Line Test

• Eye Test

• Vertical Line Test

• Diagonal Line Test