document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=92312>Question 92312</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0132191415/algebrahomeworkh>Blitzer College Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I am trying to solve a function that I must graph and I am having a problem solivng the equation,the problem is find the h,the x-coordinate of the vertex of this parabola   f(x)=x2+4x+1 and then i have to find the h,the x-coordinate of the vertex of this parabola can you help then I have to substitute the two whole number values  to the left and right of h into the function to find the corresponding y to do the graph. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #67172 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=67172\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x)=x^2+4x+1<BR>\n" );
document.write( "Complete the square on the x terms and keep the equation balanced.<BR>\n" );
document.write( "x^2+4x+? = y-1+?<BR>\n" );
document.write( "x^2+4x+4) = y-1+4<BR>\n" );
document.write( "(x+2)^2 = y+3<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "h=-2; k=-3<BR>\n" );
document.write( "So the vertex is at (-2,-3)<BR>\n" );
document.write( "The axis of symmetry is x=-2<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "If x=-1 y = 1-4+1 = -2 giving you point (-1,-2)<BR>\n" );
document.write( "If x=-3 y = 9-12+1 = -2 giving you point (-3,-2)<BR>\n" );
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document.write( "====================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
document.write( "\n" );
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