document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=168985>Question 168985</A>: <I><SPAN STYLE=\"word-break: break-all;\"> parallel, perpendicular or neither:\r<BR>\n" );
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document.write( "y=x+7\r<BR>\n" );
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document.write( "y=-x+2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #124611 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley77><B>checkley77(12844)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley77><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=124611\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Because the slopes are negative recipricals of each other then these lines are perpendicular.<BR>\n" );
document.write( "y=x+7 (red line)<BR>\n" );
document.write( "y=-x+2 (green line)<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+300%2C+-10%2C+5%2C+-6%2C+10%2C+x+%2B7%2C+-x+%2B2%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+300%2C+-10%2C+5%2C+-6%2C+10%2C+x+%2B7%2C+-x+%2B2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > (graph 300x300 pixels, x from -10 to 5, y from -6 to 10, of TWO functions x +7 and -x +2).  </SPAN>\n" );
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