Is It a Function Tables and Mappings

<(1,2), (1,3), (1,4), (1,5)>

<(1,2), (2,3), (3,4), (4,5)>

<(1,2), (3,4), (3,5), (6,7)>

<(1,2), (3,4), (5,6), (5,8)>

Table A

Table B

Both Tables A & B represent functions

Neither table represents a function

Mapping A

Mapping B

Both Mapping A and Mapping B represent functions

Neither Mapping represents a function

3

6

2

Any value of m would make this a function.

Function

Not a function

Function

Not a Function

Function

Not a Function 

does not represent

represents

each x-value corresponds to more than one y-value

each x-value corresponds to exactly one y-value

A

B

C

D

does not represent

represents

each x-value corresponds to more than one y-value

each x-value corresponds to exactly one y-value