document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=422648>Question 422648</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A line contains the points (1,-3) and (1, -2). Another line graphed in the same coordinate plane contains the points (-2,0) and (-3,-3). \r<BR>\n" );
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document.write( "Based on the slope of these lines, are they parallel, perpendicular or neither? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #294969 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=294969\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The slope of a line is (change in y)/(change in x)<BR>\n" );
document.write( "given:<BR>\n" );
document.write( "(1,-3) and (1,-2)<BR>\n" );
document.write( "slope =<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28-2+-%28-3%29%29+%2F+%28+1+-+1%29 ALIGN=MIDDLE  ALT=\"+%28-2+-%28-3%29%29+%2F+%28+1+-+1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "slope = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F0+ ALIGN=MIDDLE  ALT=\"+1%2F0+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "division by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0 ALIGN=MIDDLE  ALT=\"0\"   DISABLED_style= \"max-width:90%; height:auto;\" > means the line is vertical (infinite slope)<BR>\n" );
document.write( "and<BR>\n" );
document.write( "(-2,0) and (-3,-3)<BR>\n" );
document.write( "slope = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28-3+-+0%29+%2F+%28-3+-%28-2%29%29+ ALIGN=MIDDLE  ALT=\"+%28-3+-+0%29+%2F+%28-3+-%28-2%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "slope = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-3+%2F+-1++=+3+ ALIGN=MIDDLE  ALT=\"+-3+%2F+-1++=+3+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "They are neither </SPAN>\n" );
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