<PRE><B>Question 639784</B>
&lt;br&gt;&lt;font face=&quot;Tahoma&quot;&gt;The domain is simply the set of x values: {3}&lt;br&gt;

The range is simply the set of y values: {9,10,11,12}&lt;br&gt;

Since there are multiple y values for any given x value,&lt;br&gt;

this relation is NOT a function.&lt;br&gt;

If graphed, it would fail the Vertical Line Test.&lt;br&gt;

For a relation to be a function, for any particular x value (or input value),&lt;br&gt;

there can only be one corresponding y value (or output value).&lt;br&gt;

I hope this helps!  :)&lt;br&gt;

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