Functions and One to One

Which graph is not a function?

• 
• 
• 
• 

What is the definition of function?

• Has inputs and outputs

• Every input has exactly one output

• Inputs have different outputs every time

• x-values and y-values

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

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 

The relation in the graph is..

• a function but not a one-to-one function.

• a one-to-one function.

• not a function

The relation in the graph is..

• a function but not a one-to-one function.

• a one-to-one function.

• not a function

The inverse has been reflected over which line?

• y = x

• x = 0

• y = 0

• x = -y

To determine if a function is a one-to-one function by looking at it's graph,

it must passed the vertical and horizontal line test

• False

• True