Answer:
d: {-5, 0, 8}
r: {-6, -3, 1, 8}
Step-by-step explanation:
You want the domain and range of the relation T= {(-5, -3), (8, -6), (-5, 1), (0,8)}.
Domain
The domain is the set of first values. We usually like to see duplicates eliminated and the values written in increasing order:
{-5, 0, 8}
Range
The range is the set of second values. Again, we like them in order:
{-6, -3, 1, 8}
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Additional comment
If there are duplicates among the domain values (as here), the relation is not a function.
