document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=776566>Question 776566</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If f(2)=1 and f(4)=-2 then what is f(x)?\r<BR>\n" );
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document.write( "I just don't know how to do it.... </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #473631 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=473631\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> we are given two points and need to wrte the equation for the line<BR>\n" );
document.write( "the two points are (2,1) and (4,-2)<BR>\n" );
document.write( "the standard form for a line is y = mx +b<BR>\n" );
document.write( "m = 1 - (-2)  /  2 - 4  = -(3/2)<BR>\n" );
document.write( "1 = -(3/2)*2 +b<BR>\n" );
document.write( "1 = -3 + b<BR>\n" );
document.write( "b = 4<BR>\n" );
document.write( "the function is f(x) = -(3/2)x +4<BR>\n" );
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