Is It a Function or Relation

• Function
• Not a Function

Does this mapping diagram represent a function?

• No, because there are repeating input values

• Yes, because there are no repeating input values

Tags

CCSS.8.F.A.1

Is this graph a function or not a function? 

• Function

• Not a Function

Which graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Is this graph a function or not a function? 

• Function 

• Not a Function

True or a false:  A relation is always a function

• TRUE

• FALSE

Tags

CCSS.8.F.A.1

What test do we use to see if a relation is a function?

• Horizontal Line Test

• The Line Test

• The Vertical Line Test

• Just look at it

Does the table represent a function or not a function?

• Function

• Not a Function

Tags

CCSS.8.F.A.1

A relation is

• A way of looking at things.

• Always a function

• A set of ordered pairs

• a set of numbers

Tags

CCSS.8.F.A.1

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.

Tags

CCSS.8.F.A.1