document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=5997>Question 5997</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Help!!!  find the equation of a line for the following\r<BR>\n" );
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document.write( "slope = undefined passing through (3,-8)\r<BR>\n" );
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document.write( "Thanks  Caroline </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #3154 by </B><A HREF=/tutors/aboutme.mpl?userid=prince_abubu><B>prince_abubu(198)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=prince_abubu><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=3154\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It would be x = 3. Yes, that can be a line.\r<BR>\n" );
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document.write( "If an equation's got an undefined slope, it's automatically a vertical line. Remember when you calculated slope by saying <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+m+=+%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+ ALIGN=MIDDLE  ALT=\"+m+=+%28y%5B2%5D+-+y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >. A vertical line results if <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+x%5B2%5D+=+x%5B1%5D+ ALIGN=MIDDLE  ALT=\"+x%5B2%5D+=+x%5B1%5D+\"   DISABLED_style= \"max-width:90%; height:auto;\" > forcing the denominator of the slope formula to be 0, which we can't have (that is, we can't have a zero denominator in math).\r<BR>\n" );
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document.write( "If you take all the points of a vertical line, their x-coordinates are all the same. If (3,-8) lies on that line, then so does (3,100) and (3,-195.2226). I just chose those two y values because it wouldn't matter. Since the y value can be ANYTHING and its choice doesn't affect that x value, your equation simply boils down to x = 3 in this case, because the x-coordinate given to you was 3. </SPAN>\n" );
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