Functions Is It 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

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.

Which example is not a function? 

• Example 1 and 3

• Example 2 and 3 

• Example 2 

• Example 1

Is this graph a function or not a function? 

• Function 

• Not a Function

What is the definition of function? (a)  

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

A relationship that assigns exactly one output value for each input value is called a ​ (a)  

• function

• domain

• range

In Harry's math class, a relationship in which each input is paired with exactly one output is called a ​ (a)  

• function

• Independent Variable

• Axis of Symmetry

• Slope

• Range

• Yes
• No

Does the mapping of these points represent a function? (Note: the left oval represents your x values and the right oval represents your y values)

• Function

• Not a Function

A relationship in which each input is paired with exactly one output is called a ​ (a)  

• function

• Independent Variable

• Axis of Symmetry

• Slope

• Range