document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131780>Question 1131780</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Show all work as you solve the linear modeling problem below.\r<BR>\n" );
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document.write( "  The Environmental Protection Agency lists among its \"Climate Change Indicators\" the increase in severity of wildfires in the U.S. over time.  In 1995, the total area burned by wildfires was 2.1 million acres.  In 2011, the total area burned by wildfires was 8.5 million acres.  Write a linear equation in slope-intercept form that models this growth.  Let x stand for the number of years after 1995 and let y stand for the total area burned by wildfires in millions of acres.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #748497 by </B><A HREF=/tutors/aboutme.mpl?userid=joshuajz><B>joshuajz(12)</B></A><img src=\"/images/stars/stars-06.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=joshuajz><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=748497\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Personally I like to create some sort of table, or quick jot notes of the useful information\r<BR>\n" );
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document.write( "In 1995: Total Area = 2.1 million acres<BR>\n" );
document.write( "In 2011: Total Area = 8.5 million acres<BR>\n" );
document.write( "Write a linear equation in slope y intercept form.\r<BR>\n" );
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document.write( "Remember: Slope y intercept form is (y)=(mx+b)<BR>\n" );
document.write( "We can turn our data into the following points:<BR>\n" );
document.write( "(1995, 2100000) and (2011, 8500000)<BR>\n" );
document.write( "First we want to calculate the slope using: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29 ALIGN=MIDDLE  ALT=\"%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%288500000-2100000%29%2F%282011-1995%29 ALIGN=MIDDLE  ALT=\"%288500000-2100000%29%2F%282011-1995%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Therefore: The slope(m) = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%286400000%29%2F%2816%29 ALIGN=MIDDLE  ALT=\"%286400000%29%2F%2816%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = 400000<BR>\n" );
document.write( "Now that we have the slope, we can take one of the points, I'll use (1995, 2,100,000) and plug it into our equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=mx%2Bb ALIGN=MIDDLE  ALT=\"y=mx%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2100000=400000%2A1995%2Bb ALIGN=MIDDLE  ALT=\"2100000=400000%2A1995%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2100000%29=798000000%2Bb ALIGN=MIDDLE  ALT=\"2100000%29=798000000%2Bb\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2100000-798000000%29=b ALIGN=MIDDLE  ALT=\"2100000-798000000%29=b\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=-795900000 ALIGN=MIDDLE  ALT=\"b=-795900000\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Now we can write our final equation:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=400000x-795900000%29 ALIGN=MIDDLE  ALT=\"highlight%28y=400000x-795900000%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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