document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=302294>Question 302294</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the vertex of the parabola.y = -4x2 - 16x - 11 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #216794 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=216794\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the vertex of the parabola.<BR>\n" );
document.write( "y = -4x^2 - 16x - 11<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Vertex occurs at x = -b/2a = 16/(-8) = -2<BR>\n" );
document.write( "f(-2)= -4(-2)^2 - 16(-2) - 11<BR>\n" );
document.write( "f(-2) = -16 + 32 - 11<BR>\n" );
document.write( "f(-2) = 5<BR>\n" );
document.write( "---<BR>\n" );
document.write( "Vertex:: (-2,5)<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );