document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=822560>Question 822560</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the equation ,in the form y = ax^2 + bx + c,of the parabola which passes through the points(-3,0) and (1,-16). </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #494956 by </B><A HREF=/tutors/aboutme.mpl?userid=Alomelo><B>Alomelo(2)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alomelo><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=494956\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> For (-3,0)<BR>\n" );
document.write( "we write  0=(-3)^2+b(-3)+C,   So, 3b-c=9........(i)\r<BR>\n" );
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document.write( "and for(1,-16),   So b+c=-17......................(ii) <BR>\n" );
document.write( "        \r<BR>\n" );
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document.write( "So (i)+(ii) we get b=-2<BR>\n" );
document.write( "So put this into equation(ii) we get c=-15<BR>\n" );
document.write( "  so ultimetly the equation is:  y=x^2-2x-15.<BR>\n" );
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