document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=206880>Question 206880</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello,<BR>\n" );
document.write( "I am stuck on this problem. I did do part of it, please let me know if what I did is right.<BR>\n" );
document.write( "Problem: Consider the function f(x)=x^2+4x+1<BR>\n" );
document.write( "Find h, the x-coordinate of the vertex of this parabola.<BR>\n" );
document.write( "I got this: x=-4/2*1, x=-4/2, x=-2 (is this correct?)\r<BR>\n" );
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document.write( "Substitute the two integers immediately to the left and right of h into the function to find the corresponding y. Fill in the following table. Make sure your x-values are in increasing order in your table.\r<BR>\n" );
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document.write( "__x__|___y_<BR>\n" );
document.write( "_____|_____<BR>\n" );
document.write( "_____|_____<BR>\n" );
document.write( "_____|_____<BR>\n" );
document.write( "_h=_|______<BR>\n" );
document.write( "_____|_____<BR>\n" );
document.write( "_____|_____\r<BR>\n" );
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document.write( "The above table is what I am having trouble with. If you would please show me how to go about figuring this out I would appreciate it. Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #156371 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=156371\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First off, you need to realize that the x-coordinate of the vertex is the value of 'h'. So in this case, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h=-2 ALIGN=MIDDLE  ALT=\"h=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" > (you have the correct x-coordinate of the vertex). \r<BR>\n" );
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document.write( "So all you need to do is plug in values that fall to the left and to the right of the x-coordinate of the vertex 'h'. So why not try plugging in x=0 (an easy value that is to the right of 'h'), x=-1, x=-3 (now we're to the left of 'h') and x=-4. Let me know how this goes. </SPAN>\n" );
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