document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1188419>Question 1188419</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The median existing home price of a home is 1988 was $90,600.00, and in 1994 it was $107,600.00.  You wish to fit a linear equation to the points representing this data using 1980 as the base year.  \r<BR>\n" );
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document.write( "a.​Write and solve a system of equations that fit this model.\r<BR>\n" );
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document.write( "b.​Interpret the slope in the context of the data.​\r<BR>\n" );
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document.write( "c.​By your model, what was the median price in 1991? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #819619 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=819619\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> price P=(year-1980)x+ some constant<BR>\n" );
document.write( "ordered pair (8, 90600) and (14, 107,600)<BR>\n" );
document.write( "slope is difference in y 17000/ difference in x 6,<BR>\n" );
document.write( "that is $2833.3<BR>\n" );
document.write( "point slope formula is y-y1=m(x-x1), m slope and (x1, y1) a point<BR>\n" );
document.write( "y-90600=2833.3(x-8)<BR>\n" );
document.write( "y=2833.3x+67934<BR>\n" );
document.write( "slope is increase in the price per year.<BR>\n" );
document.write( "1991 is x=11<BR>\n" );
document.write( "so price was in 1991:  2833.33*11+67934=$99,100.67 </SPAN>\n" );
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