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How to solve this relation question? The answer is given, but could someone explain?

I don’t understand what x and y is in this question.

How to solve this relation question The answer is given but could someone explain I dont understand what x and y is in this question class=

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Answer:


Step-by-step explanation:

The relation R is x = y/2   and  values of x and y must be in the set A. That is they must be 1 , 2 or 4 and satisfy the relation x = y/2.

So the ordered pairs in this relation are (1, 2) and (2, 4) .  Note that 4 cannot be x as that would make y = 8 which is not a member of  Set A.

I hope this helps.

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