document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=288202>Question 288202</A>: <I><SPAN STYLE=\"word-break: break-all;\"> determine which two equations represent perpendicular lines.<BR>\n" );
document.write( "Fill in the blanks in alphabetical order ________and________\r<BR>\n" );
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document.write( "a) y=3x-1<BR>\n" );
document.write( "b) y=1/3x+1<BR>\n" );
document.write( "c) y=-1/3x+1<BR>\n" );
document.write( "d) y=1/3x-1   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #208880 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=208880\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hint: perpendicular lines have slopes which multiply to -1. For instance, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%28-1%2F2%29x ALIGN=MIDDLE  ALT=\"y=%28-1%2F2%29x\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=2x ALIGN=MIDDLE  ALT=\"y=2x\"   DISABLED_style= \"max-width:90%; height:auto;\" > are perpendicular since their slopes of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-1%2F2 ALIGN=MIDDLE  ALT=\"-1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > and 2 multiply to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-1%2F2%29%282%29=-2%2F2=-1 ALIGN=MIDDLE  ALT=\"%28-1%2F2%29%282%29=-2%2F2=-1\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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