Functions

What is the definition of function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Is this mapping a function or not a function? 

• Function

• Not a Function

Is this set of ordered pairs 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 this set of ordered pairs a function or not a function? 

• Function

• Not a Function 

Is the graph pictured a function?

• Yes

• No

Is this set of ordered pairs a function or not a function? 

• Function

• Not a function

• Function

• Not a Function

used to determine if a relation is a function

• 3d line test

• diagonal line test

• horizontal line test

• vertical line test