document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1080140>Question 1080140</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The temperature of air at 2000 metres is -8 degrees C. At ground level the temperature is 28 degrees C. The temperature changes at the same rate every 1000 metres. What is the temperature at the height of 2500 metres? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #744461 by </B><A HREF=/tutors/aboutme.mpl?userid=FrankM><B>FrankM(1040)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=FrankM><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=FrankM><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=744461\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> X=0,  Y=28<BR>\n" );
document.write( "X=2000 Y=-8\r<BR>\n" );
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document.write( "Change in Y (-36) over change in X (2000) = -36/2000\r<BR>\n" );
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document.write( "Y-Y1=m(X-X1)\r<BR>\n" );
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document.write( "Y-28=-36/2000(X)\r<BR>\n" );
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document.write( "Y= -.018X+28\r<BR>\n" );
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document.write( "At 2500,  \r<BR>\n" );
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document.write( "Y=-.018(2500)+28\r<BR>\n" );
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document.write( "Y= -17C </SPAN>\n" );
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