document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=515228>Question 515228</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the vertex of f(x)=-x^2+8x-19 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #343856 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=343856\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> what is the vertex of f(x)=-x^2+8x-19<BR>\n" );
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document.write( "a = -1 ; b = 8 ; c = -19<BR>\n" );
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document.write( "Vertex occurs where x = -b/(2a) = -8/(2*-1) = 4<BR>\n" );
document.write( "f(4) = -16 + 32 -19 = -3<BR>\n" );
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document.write( "Vertex at (4,-3)<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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