document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=730169>Question 730169</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write an equation of the line that passes through (8,-5) and is perpendicular to the graph of the line that passes through points (3,5) and (4,9). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #446531 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=446531\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write an equation of the line that passes through (8,-5) and is perpendicular to the graph of the line that passes through points (3,5) and (4,9).<BR>\n" );
document.write( "***<BR>\n" );
document.write( "Equation of a line: y=mx+b, m=slope, b=y-intercept<BR>\n" );
document.write( "slope(m)=&#8710;y/&#8710;x=(y1-y2)/(x1-x2)<BR>\n" );
document.write( "For the line that passes through points (3,5) and (4,9).<BR>\n" );
document.write( "m=(9-5)/(4-3)=4/1<BR>\n" );
document.write( "..<BR>\n" );
document.write( "For the line that passes through (8,-5), perpendicular to the first line<BR>\n" );
document.write( "m=-1/4 (negative reciprocal of slope of first line)<BR>\n" );
document.write( "equation: y=(-1/4)x+b<BR>\n" );
document.write( "solve for b using given coordinates(8,-5) on the line<BR>\n" );
document.write( "-5=(-1/4)*8+b<BR>\n" );
document.write( "-5=-2+b<BR>\n" );
document.write( "b=-3<BR>\n" );
document.write( "equation: y=-x/4-3 </SPAN>\n" );
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