document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=448150>Question 448150</A>: <I><SPAN STYLE=\"word-break: break-all;\"> write an equation with the following coordinates (-8,-7)(0,-7)(8-,7). Please show all your work.<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 #308461 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=308461\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> write an equation with the following coordinates (-8,-7)(0,-7)(8,7). Please show all your work.<BR>\n" );
document.write( "Quadratic Form::: ax^2 + bx + c = y<BR>\n" );
document.write( "(-8,-7) gives:: 64a  - 8b  +  c = -7<BR>\n" );
document.write( "(0, -7) gives::   0   + 0  +  c = -7<BR>\n" );
document.write( "(8, 7)  gives::  64a + 8b  +  c =  7<BR>\n" );
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document.write( "Using a matrix function on a TI-84 you get:<BR>\n" );
document.write( "a = 7/64<BR>\n" );
document.write( "b = 56/64<BR>\n" );
document.write( "c = -7<BR>\n" );
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document.write( "y = (7/64)x^2 + (56/64)x -7<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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