document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1014774>Question 1014774</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Why can we not use point-slope form or slope-intercept form to write the equation of a vertical line?<BR>\n" );
document.write( "Thank you in advance for your help<BR>\n" );
document.write( "Daniel H. Jack </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #631083 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=631083\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Why can we not use point-slope form or slope-intercept form to write the equation of a vertical line?<BR>\n" );
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document.write( "slope = (change in y)/(change in x)<BR>\n" );
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document.write( "But there is no change in x if the line is verical; so the slope requires you divide by 0.<BR>\n" );
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document.write( "But division by zero is \"undefined\".<BR>\n" );
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document.write( "So there is no slope to use in pt-slope or slope-int.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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