Identify the mapping diagram that represents the relation and determine whether the relation is a function.
{(-2, -5), (-1, -3), (-2, 6), (5, 7)}
The mapping diagram that represents the relation is as follows:
-2 → -5
-1 → -3
-2 → 6
5 → 7
In a function, each input value (x-value) must correspond to only one output value (y-value). In this case, we see that the input value -2 corresponds to two different output values (-5 and 6). Therefore, the relation is not a function.