document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=121432>Question 121432</A>: <I><SPAN STYLE=\"word-break: break-all;\"> These data represent the population of a certain city.<BR>\n" );
document.write( "		Year	Population (in thousands)<BR>\n" );
document.write( "		1950		18<BR>\n" );
document.write( "		1960		23<BR>\n" );
document.write( "		1970		29<BR>\n" );
document.write( "		1980		32<BR>\n" );
document.write( "		1990		38<BR>\n" );
document.write( "		2000		42		      	<BR>\n" );
document.write( "			<BR>\n" );
document.write( "		(a)  Draw a line graph for the data.<BR>\n" );
document.write( "		(b)  Use the line graph to predict the population in the year 2010<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 #89106 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=89106\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Y=mX+b<BR>\n" );
document.write( "USING THE POINTS (5,18)(10,42) WE HAVE A SLOPE OF:<BR>\n" );
document.write( "(42-18)/(10-5)=24/5=4.8.<BR>\n" );
document.write( "NOW USING ONE SET OF POINTS WE FIND THE Y INERCEPT.<BR>\n" );
document.write( "18=4.8*5+b<BR>\n" );
document.write( "b=18-24<BR>\n" );
document.write( "b=-6<BR>\n" );
document.write( "NOW WE HAVE THE LINE EQUATION:<BR>\n" );
document.write( "Y=4.8X-6<BR>\n" );
document.write( "WHEN X=11 THE Y=4.8*11-6 OR Y=46.8 <BR>\n" );
document.write( "this says that the population in 2010 will be 46.8 thousand.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+300%2C+-6%2C+12%2C+-10%2C+50%2C+y+=+4.8x+-6%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+300%2C+-6%2C+12%2C+-10%2C+50%2C+y+=+4.8x+-6%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > (graph 300x300 pixels, x from -6 to 12, y from -10 to 50, y = 4.8x -6). \r<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );