document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1012267>Question 1012267</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A line passes through the points ( p, a ) and ( p, - a ) where p and a are real numbers and p is not equal to 0. Describe each of the following. explain your reasoning. <BR>\n" );
document.write( "1. Slope of the line <BR>\n" );
document.write( "2. Equation of the line <BR>\n" );
document.write( "3. y-intercept <BR>\n" );
document.write( "4. Slope of a line perpendicular to the given line  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #628140 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=628140\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%5B1%5D ALIGN=MIDDLE  ALT=\"P%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >=( p, a ); <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%5B2%5D ALIGN=MIDDLE  ALT=\"P%5B2%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >=( p, - a )<BR>\n" );
document.write( ".<BR>\n" );
document.write( "1. <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=slope=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29 ALIGN=MIDDLE  ALT=\"slope=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >=<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-a-a%29%2F%28p-p%29 ALIGN=MIDDLE  ALT=\"%28-a-a%29%2F%28p-p%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Division by zero (p-p=0) is undefined. <BR>\n" );
document.write( "Vertical lines have undefined slope.<BR>\n" );
document.write( "The line is vertical.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "2. Equation: Vertical lines have equation of form x=n<BR>\n" );
document.write( "In this case, the x value is p<BR>\n" );
document.write( "Equation: x=p<BR>\n" );
document.write( ".<BR>\n" );
document.write( "3. Since p cannot be zero, there is no y-intercept.<BR>\n" );
document.write( "x value must be zero to cross y axis.<BR>\n" );
document.write( "(The line is parallel to the y axis)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "4. Line perpendicular to vertical line is horizontal.<BR>\n" );
document.write( "Horizontal lines have slope m=0. </SPAN>\n" );
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