document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=889167>Question 889167</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given the following equations:<BR>\n" );
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document.write( "y = 8t2 – 6t – 11 <BR>\n" );
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document.write( "and<BR>\n" );
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document.write( "x = 2t – 7<BR>\n" );
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document.write( "find y as a function of x and then give the value for f(8).<BR>\n" );
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document.write( "That is, solve for y in terms of x and replace y with the \"f(x)\" notation.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #537966 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=537966\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve second equation for t<BR>\n" );
document.write( "2t = x+7<BR>\n" );
document.write( "t = (x+7) / 2<BR>\n" );
document.write( "substitute for t in first equation<BR>\n" );
document.write( "y = 8((x+7)/2)^2) -6((x+7) / 2) - 11<BR>\n" );
document.write( "y = 8(x^2+14x+49)/4 -3(x+7) -11<BR>\n" );
document.write( "y = 2x^2 +28x+98 -3x -21 -11<BR>\n" );
document.write( "y = 2x^2 +25x +66<BR>\n" );
document.write( "f(8) = 2(8^2) +25*8 +66<BR>\n" );
document.write( "f(8) = 394<BR>\n" );
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