document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1182614>Question 1182614</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find b and c so that y=17x^2+bx+c has vertex (-9,6)<BR>\n" );
document.write( " b=<BR>\n" );
document.write( "c= </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #812712 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=812712\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "Given a quadratic function y=ax^2+bx+c, the x coordinate of the vertex is -b/2a.<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-9=-b%2F%282%2A17%29 ALIGN=MIDDLE  ALT=\"-9=-b%2F%282%2A17%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-b=-9%282%2A17%29 ALIGN=MIDDLE  ALT=\"-b=-9%282%2A17%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b=306 ALIGN=MIDDLE  ALT=\"b=306\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "The function value at the vertex is 6:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=17%28-9%29%5E2%2B306%28-9%29%2Bc=6 ALIGN=MIDDLE  ALT=\"17%28-9%29%5E2%2B306%28-9%29%2Bc=6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-1377%2Bc=6 ALIGN=MIDDLE  ALT=\"-1377%2Bc=6\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c=1383 ALIGN=MIDDLE  ALT=\"c=1383\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "ANSWERS:<BR>\n" );
document.write( "b=306<BR>\n" );
document.write( "c=1383<br><BR>\n" );
document.write( "A graph, showing the vertex at (-9,6)...<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C400%2C-12%2C2%2C-5%2C15%2C17x%5E2%2B306x%2B1383%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C400%2C-12%2C2%2C-5%2C15%2C17x%5E2%2B306x%2B1383%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );