document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=452262>Question 452262</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I hope this is a linear equation and that someone can help me convert it from words to and equation and graph.<BR>\n" );
document.write( "I need to illustrate the decline in the herring population over the years and estimate what will happen if the trend continues. I've spent all day researching the information and now I have no idea how to put it together, or even if it belongs together :0 \r<BR>\n" );
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document.write( "Every year the herring returning to the Stonybrook Run to spawn is declining as overfishing, water pollution, and loss of habit takes a toll on their numbers.<BR>\n" );
document.write( "In 2000, you could count 100 herring go through the run in 1 minute, but by  2005, it took 5 minutes to count the same number.<BR>\n" );
document.write( "The count in 2010 took 10 minutes to count the 100 fish. If the trend continues how long will it take count 100 herring in 2015?    </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #310934 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=310934\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Create a table of data:<BR>\n" );
document.write( "year	time<BR>\n" );
document.write( "2000	1<BR>\n" );
document.write( "2005	5<BR>\n" );
document.write( "2010	10<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Plot the above three points on graph paper.<BR>\n" );
document.write( "Because the dots appears to be in a straight line, you can assume it is linear.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Determine slope:<BR>\n" );
document.write( "m = (y2-y1)/(x2-x1) using first and last points<BR>\n" );
document.write( "m = (10-1)/(2010-2000)<BR>\n" );
document.write( "m = (9)/(10)<BR>\n" );
document.write( "m = 9/10<BR>\n" );
document.write( ".<BR>\n" );
document.write( "using the slope above and one point (2000,1)<BR>\n" );
document.write( "plug it into the \"point-slope\" form:<BR>\n" );
document.write( "y - y1 = m(x - x1)<BR>\n" );
document.write( "y - 1 = (9/10)(x - 2000)<BR>\n" );
document.write( "y - 1 = (9/10)x - (9/10)2000<BR>\n" );
document.write( "y - 1 = (9/10)x - (9)200<BR>\n" );
document.write( "y - 1 = (9/10)x - 1800<BR>\n" );
document.write( "y = (9/10)x - 1801 (this is your equation)<BR>\n" );
document.write( ".<BR>\n" );
document.write( "For, 2015:<BR>\n" );
document.write( "y = (9/10)x - 1801<BR>\n" );
document.write( "y = (9/10)2015 - 1801<BR>\n" );
document.write( "y = (9)201.5 - 1801<BR>\n" );
document.write( "y = (9)201.5 - 1801<BR>\n" );
document.write( "y = 1813.5 - 1801<BR>\n" );
document.write( "y = 12.5 minutes\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );