document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=284484>Question 284484</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine whether the graphs of the two equations are perpendicular<BR>\n" );
document.write( "y=8x-8<BR>\n" );
document.write( "2y=5-x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #206429 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=206429\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If they are penpendicular, then the product of their slopes will be -1.\r<BR>\n" );
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document.write( "y = 8x - 8\r<BR>\n" );
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document.write( "2y = 5 - x\r<BR>\n" );
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document.write( "We need to write 2y = 5 - x in the slope-intercept form y = mx + b.\r<BR>\n" );
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document.write( "To do so, we must isolate y.\r<BR>\n" );
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document.write( "2y = 5 - x\r<BR>\n" );
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document.write( "y = (5 - x)/2\r<BR>\n" );
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document.write( "y = 5/2 -(1/2)(x)\r<BR>\n" );
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document.write( "The slope is the number next to x.\r<BR>\n" );
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document.write( "As you can see, the slopes are not the same nor do they yield -1 when multiplied.  So, the two given equations are not perpendicular. </SPAN>\n" );
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