document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=376054>Question 376054</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine whether the graphs of the two equations are perpendicular? \r<BR>\n" );
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document.write( "x+2y=5; 2x+4y=9. \r<BR>\n" );
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document.write( "The only thing I can decide on is that they are not parallel because they have different slopes. One is x and the other is 2x. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #267472 by </B><A HREF=/tutors/aboutme.mpl?userid=bostonmathtutor><B>bostonmathtutor(8)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=bostonmathtutor><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=267472\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Graphs are perpendicular if the slope of one is the reciprocal of the other's slope.\r<BR>\n" );
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document.write( "Since, we have:\r<BR>\n" );
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document.write( "x+2y=5 OR y = (-1/2)x + (5/2)\r<BR>\n" );
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document.write( "2x+4y=9 OR y = (-1/2)x + (9/4)\r<BR>\n" );
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document.write( "So, they are parallel and NOT perpendicular. </SPAN>\n" );
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