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Answer:
yes, it is a function
domain: {-8, 2 ,4, 5, 6}
range: {-6, -4, -2}
Step-by-step explanation:
The domain is the set of first values of the ordered pairs: {2, 6, 4, 5, -8}. We often like to see them in order:
domain: {-8, 2 ,4, 5, 6}
The range is the set of second values of the ordered pairs.
range: {-6, -4, -2}
There are no repeated values in the domain, so the relation is a function.