Determining if a Relation and Graph Is a Function

Is every relation a function ?

• yes

• no

• maybe

• always

A collection of ordered pairs in which the first element is related to the second element.

• Function

• Relation

• Domain

• Range

Which relation is NOT a function?

• {(1,-5), (3,1), (-5,4), (4,-2)}

• {(2,7), (3,7), (4,7), (5,8)}

• {(1,-5), (-1,6), (1,5), (6,-3)}

• {(3,-2), (5,-6), (7,7), (8,8)}

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 graph does NOT pass the vertical line test?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

• Function

• Not a Function

Is the graph a function or not a function?

• Function

• Not a Function

Examine the table and determine if it represents a function or not a function.

• Function

• Not a Function

Which graph does NOT pass the Vertical Line Test?

• Graph a

• Graph b

• Graph c

A relation where every input yields one and only one output is called what?

• Relation

• Linear

• Exponential

• Function