<PRE><B>Question 270598</B>
What are the domain and range of each relation? Is the relation a function? 
E= {(40,10),(-18,27),(38,10),(57,-15)}
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Each ordered pair has a 1st element and a 2nd element.
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Domain is the set of 1st elements: {40,-18, etc.
Range is the set of 2nd elements: {10,27, etc.
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It is a function because each 1st element has just one 2nd element.
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Cheers,
Stan H.</PRE>