document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=486903>Question 486903</A>: <I><SPAN STYLE=\"word-break: break-all;\"> f(x)=-12x^2+84x\r<BR>\n" );
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document.write( "Find the vertex </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #332840 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=332840\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x)=-12x^2+84x <BR>\n" );
document.write( "Find the vertex<BR>\n" );
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document.write( "To find the vertex, you must see the equation in standard form: y=A(x-h)^2+k, with (h,k) being the (x,y) coordinates of the vertex.<BR>\n" );
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document.write( "y=-12x^2+84<BR>\n" );
document.write( "This equation of a parabola is in standard form with h=0, k=84 and A=-12<BR>\n" );
document.write( "The negative sign of the lead coefficient means the parabola opens downwards and has a maximum=84.<BR>\n" );
document.write( "Coordinates of the vertex are (0, 84) </SPAN>\n" );
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