identify the mapping diagram that represents the relation and determine whether the relation is a function.
{(-1, -9),(0,-9),(4,-9),(5,-9)}
The mapping diagram that represents the relation {(-1, -9),(0,-9),(4,-9),(5,-9)} is:
-1 --> -9
0 --> -9
4 --> -9
5 --> -9
This relation is a function because each input (-1, 0, 4, 5) is associated with exactly one output (-9).