Functions vs Relations

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.

Are both of these relations functions?

• yes

• no

Functions have exactly one output for every input

• true

• false

Which statement is true?

• All functions are relations

• All relations are functions

• function

• relation

• relation

• function

• function

• relation

• relation

• function

Which statement is false?

• if an input is mapped to more than one output then it is a function

• if an input is mapped to only one output then it is a function

• if an output has more than one input mapped to it then it is a function

• if an output has only one input mapped to it then it is a function

Select ALL the graphs that represent functions

• Graph 1

• Graph 2

• Graph 3