<PRE><B>Question 450858</B>
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Consider the equation as a description of a set of ordered pairs.  *[tex \LARGE x\ =\ 4] means give me the set of all ordered pairs that have an *[tex \LARGE x]-coordinate equal to 4, and, oh by the way, I don&#39;t care what the *[tex \LARGE y]-coordinate is.  The set of ordered pairs where *[tex \LARGE x\ =\ 4] is a vertical line that passes through the point (4,0).



John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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