document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=970261>Question 970261</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose that the height (in centimeters) of a candle is a linear function of the amount of time (in hours) it has been burning. After 8 hours of burning, a candle has a height of 26.4 centimeters. After 26 hours of burning, its height is 22.8 centimeters. What is the height of the candle after 20 hours? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #592910 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=592910\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Plot the height, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+ ALIGN=MIDDLE  ALT=\"+h+\"   DISABLED_style= \"max-width:90%; height:auto;\" > on the verical axis and<BR>\n" );
document.write( "hours, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+t+ ALIGN=MIDDLE  ALT=\"+t+\"   DISABLED_style= \"max-width:90%; height:auto;\" > on the horizontal axis<BR>\n" );
document.write( "You are given 2 points on the line in the format<BR>\n" );
document.write( "( t , h )<BR>\n" );
document.write( "( 8, 26.4 )<BR>\n" );
document.write( "( 26, 22.8 )<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Find equation of the line using point-slope formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+h+-+22.8+%29+%2F+%28+t+-+26+%29+=+%28+26.4+-+22.8+%29+%2F+%28+8+-+26+%29+ ALIGN=MIDDLE  ALT=\"+%28+h+-+22.8+%29+%2F+%28+t+-+26+%29+=+%28+26.4+-+22.8+%29+%2F+%28+8+-+26+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+h+-+22.8+%29+%2F+%28+t+-+26+%29+=+3.6+%2F+%28+-18+%29+ ALIGN=MIDDLE  ALT=\"+%28+h+-+22.8+%29+%2F+%28+t+-+26+%29+=+3.6+%2F+%28+-18+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28+h+-+22.8+%29+%2F+%28+t+-+26+%29+=+-.2+ ALIGN=MIDDLE  ALT=\"+%28+h+-+22.8+%29+%2F+%28+t+-+26+%29+=+-.2+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+-+22.8+=+-.2%2A%28+t+-+26+%29+ ALIGN=MIDDLE  ALT=\"+h+-+22.8+=+-.2%2A%28+t+-+26+%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=-+.2t+%2B+5.2+%2B+22.8+ ALIGN=MIDDLE  ALT=\"+h+=-+.2t+%2B+5.2+%2B+22.8+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=+-.2t+%2B+28+ ALIGN=MIDDLE  ALT=\"+h+=+-.2t+%2B+28+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+ ALIGN=MIDDLE  ALT=\"+h+\"   DISABLED_style= \"max-width:90%; height:auto;\" > after <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+20+ ALIGN=MIDDLE  ALT=\"+20+\"   DISABLED_style= \"max-width:90%; height:auto;\" > hrs<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=+-.2%2A20+%2B+28+ ALIGN=MIDDLE  ALT=\"+h+=+-.2%2A20+%2B+28+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=+24+ ALIGN=MIDDLE  ALT=\"+h+=+24+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The height is 24 cm after 20 hrs<BR>\n" );
document.write( "-------------------------------<BR>\n" );
document.write( "check the equation:<BR>\n" );
document.write( "does it go through ( 8, 26.4 ) ?<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=+-.2t+%2B+28+ ALIGN=MIDDLE  ALT=\"+h+=+-.2t+%2B+28+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=+-.2%2A8+%2B+28+ ALIGN=MIDDLE  ALT=\"+h+=+-.2%2A8+%2B+28+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=+-1.6+%2B+28+ ALIGN=MIDDLE  ALT=\"+h+=+-1.6+%2B+28+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+h+=+26.4+=+26.4+ ALIGN=MIDDLE  ALT=\"+h+=+26.4+=+26.4+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "OK -you can check other point<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );