Identifying Functions

• Function

• Not a Function

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function

• Not a Function

How do you use the vertical line test?

• Draw vertical lines through your graph. If any of the vertical lines you draw intersects the graph more than once then the graph is not the graph of a function.

• Draw vertical lines through your graph. If any of the vertical lines you draw intersects the graph more than once, then it is a function.

Is this a function or not a function?

• Function

• Not a Function

Which graph is NOT a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Which graph is a function?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

• Function
• Not a Function

Tags

CCSS.8.F.A.1

The following is not a function because...

• There are two values that equal 2.

• x = 10 and x = 40 has two values each.

• In the f(x) column, the 5 repeats.

• This table is actually a function.

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function

• Not a Function

Is this is a function or not a function?

• Function

• Not a Function

Tags

CCSS.8.F.A.1