9514 1404 393
Answer:
{(1, 2), (3, 4)}
Step-by-step explanation:
If you want both the relation and its inverse to be functions, there can be no repeated x-values, and no repeated y-values.
In the above pair of points, I have avoided duplicates by making all of the values different. That is not necessary, but it satisfies this problem easily.
A= x+z .... -x from each side and you gots a-x=z
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