Identify the mapping diagram that represents the relation and determine whether the relation is a function.
{(–3, –7), (–2, –7), (4, –7), (5, –7)}
The mapping diagram that represents the relation is:
-3 -> -7
-2 -> -7
4 -> -7
5 -> -7
Since every input (x-value) in the relation corresponds to a unique output (y-value), the relation is a function.