document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=723209>Question 723209</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find the maximum y-value on the graph<BR>\n" );
document.write( "y = f(x)\r<BR>\n" );
document.write( "\n" );
document.write( "f(x)= -x^2+2x+5 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #443067 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=443067\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> find the maximum y-value on the graph<BR>\n" );
document.write( "y = f(x) <BR>\n" );
document.write( "f(x)= -x^2+2x+5<BR>\n" );
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document.write( "Since the coefficient of x^2 is negative, the parabol<BR>\n" );
document.write( "has a maximum at it's vertex.<BR>\n" );
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document.write( "vertex occurs where x = -b/(2a) = -2(2*-1) = 1<BR>\n" );
document.write( "The y-value when x = 1 is f(1) = -1+2+5 = 6<BR>\n" );
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document.write( "Ans: y = 6<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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