Is the set of all integers where <x,y> [itex]\in[/itex](adsbygoogle = window.adsbygoogle || []).push({}); Rif and only if (y = x + 3) & (y = x – 3) an empty set?

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# Are the members of (x,y) if and only if (y = x + 3) & (y = x – 3) an empty set?

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