document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=948852>Question 948852</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Rewrite the following quadratic function in vertex form. Then, determine if it has a maximum or minimum and say what that value is.\r<BR>\n" );
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document.write( "y = -x^2 + 6x + 5 <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 #579155 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=579155\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-x%5E2%2B6x%2B5 ALIGN=MIDDLE  ALT=\"y=-x%5E2%2B6x%2B5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Complete the square,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%28x%5E2-6x%29%2B5 ALIGN=MIDDLE  ALT=\"y=-%28x%5E2-6x%29%2B5\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%28x%5E2-6x%2B9%29%2B5%2B9 ALIGN=MIDDLE  ALT=\"y=-%28x%5E2-6x%2B9%29%2B5%2B9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-%28x-3%29%5E2%2B14 ALIGN=MIDDLE  ALT=\"y=-%28x-3%29%5E2%2B14\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "So the vertex is (3,14).<BR>\n" );
document.write( "Since the coefficient of the quadratic term is negative, the parabola opens downwards and the value at the vertex is a maximum.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y%5Bmax%5D=14 ALIGN=MIDDLE  ALT=\"y%5Bmax%5D=14\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
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document.write( ".<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=drawing%28300%2C300%2C-10%2C10%2C-5%2C15%2Cblue%28line%283%2C-20%2C3%2C20%29%29%2Cgrid%281%29%2Ccircle%283%2C14%2C0.4%29%2Cgraph%28300%2C300%2C-10%2C10%2C-5%2C15%2C-x%5E2%2B6x%2B5%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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