The domain of relation R is ZxZ. (a, b) is related to (c, d) if a s c and b s d. Which statement correctly characterizes the relation R? O Ris not an equivalence relation because R is not transitive. O Ris not an equivalence relation because R is not symmetric. Ris an equivalence relation. Ris not an equivalence relation because R is not reflexive.

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A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…

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A: It is equivalence relation if (a, b) belongs to ZxZ

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A: Topic = function

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A: Definitions of symmetric, reflexive,transitive are given.We have to check them .

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A: Given problem is :

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A: Given, the relation R in R defined as R = {(a, b) : a ≤ b}.

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A: We will use basic definitions of relation.

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Q: A car dealership sells cars that were made in 2015 through 2020. Let the cars for sale be the domain…

A: Given

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A: In first question, first option is correct.

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