<PRE><B>Question 435429</B>
&lt;font face=&quot;Times New Roman&quot; size=&quot;+2&quot;&gt;


A line perpendicular to the *[tex \Large x]-axis containing the point *[tex \Large (8,1)] is the set of all points *[tex \Large (x,y)] such that *[tex \Large x\ =\ 8] and *[tex \Large y] is any real number.  Therefore the equation *[tex \Large x\ =\ 8] is both necessary and sufficient to describe the set.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
&lt;div style=&quot;text-align:center&quot;&gt;&lt;a href=&quot;http://outcampaign.org/&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cdn.cloudfiles.mosso.com/c116811/scarlet_A.png&quot; border=&quot;0&quot; alt=&quot;The Out Campaign: Scarlet Letter of Atheism&quot; width=&quot;143&quot; height=&quot;122&quot; /&gt;&lt;/a&gt;&lt;/div&gt;
&lt;/font&gt;</PRE>