document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=136513>Question 136513</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Determine whether the graphs of the two equations are perpendicular.<BR>\n" );
document.write( "y=7x-7<BR>\n" );
document.write( "3y=7-x<BR>\n" );
document.write( "Help me please. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #100004 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=100004\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> putting 2nd equation into slope-intercept __ y=(-1/3)x+7/3\r<BR>\n" );
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document.write( "if two lines are perpendicular, their slopes are negative reciprocals<BR>\n" );
document.write( "__ -1/7 does NOT equal -1/3, so the lines are NOT perpendicular </SPAN>\n" );
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