document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=839741>Question 839741</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the equation of the line that contains the point (-1,7) and has a slope that is undefined.\r<BR>\n" );
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document.write( "what is the equation of the line?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #505809 by </B><A HREF=/tutors/aboutme.mpl?userid=Theo><B>Theo(13342)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Theo><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/cgi-bin/show-face.mpl?user=Theo><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=505809\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> if the slope is undefined, it's because you have a vertical line.\r<BR>\n" );
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document.write( "the rule is:\r<BR>\n" );
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document.write( "if the equation is y = c, you have a horizontal line.<BR>\n" );
document.write( "if the equation is x = c, you have a vertical line.\r<BR>\n" );
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document.write( "c represents any constant.\r<BR>\n" );
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document.write( "your point is (-1,7) and your slope is undefined.\r<BR>\n" );
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document.write( "you have a vertical line.\r<BR>\n" );
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document.write( "a vertical line has an infinite number of values for y that can occur at the specified value of x.\r<BR>\n" );
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document.write( "your vertical line will be at x = -1.\r<BR>\n" );
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document.write( "y = 7 is a point on that line.<BR>\n" );
document.write( "there are an infinite number of other points that are on that line and they all have their x-coordinate as -1.<BR>\n" );
document.write( "some example:<BR>\n" );
document.write( "(-1,7)<BR>\n" );
document.write( "(-1,9)<BR>\n" );
document.write( "(-1,15,000,000,000)<BR>\n" );
document.write( "(-1,-15,000,000,000)\r<BR>\n" );
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document.write( "a graph of your equation will look something like this:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" src = \"http://theo.x10hosting.com/2014/feb103.jpg\" alt = \"$$$\" < />\r<BR>\n" );
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document.write( " </SPAN>\n" );
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