document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=150781>Question 150781</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the slope of a line that is perpendicular to the line that passes through the points (4,7) and (9,3)?\r<BR>\n" );
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document.write( "A. -4/5       B. -5/4    C. 4/5    D. 5/4  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #110708 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=110708\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the slope of a line that is perpendicular to the line that passes through the points (4,7) and (9,3)? <BR>\n" );
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document.write( "Use the slope formula to find the slope: m = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%28y2-y1%29%29%2F%28%28x2-x1%29%29 ALIGN=MIDDLE  ALT=\"%28%28y2-y1%29%29%2F%28%28x2-x1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Assign values: x1=4, y1=7; x2=9, y2=3<BR>\n" );
document.write( "m1 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28%283-7%29%29%2F%28%289-4%29%29 ALIGN=MIDDLE  ALT=\"%28%283-7%29%29%2F%28%289-4%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28-4%29%2F5 ALIGN=MIDDLE  ALT=\"%28-4%29%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F5 ALIGN=MIDDLE  ALT=\"-4%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "The relationship of slopes of perpendicular lines: m1*m2 = -1; find m2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F5 ALIGN=MIDDLE  ALT=\"-4%2F5\"   DISABLED_style= \"max-width:90%; height:auto;\" > * m2 = -1<BR>\n" );
document.write( "m2 = -1 * <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-5%2F4 ALIGN=MIDDLE  ALT=\"-5%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "m2 = +<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5%2F4 ALIGN=MIDDLE  ALT=\"5%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" > slope of the perpendicular line<BR>\n" );
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