document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=92007>Question 92007</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am lost \r<BR>\n" );
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document.write( "I'm not sure what this is asking? To plot my points help. my brain is mush right now. 	\r<BR>\n" );
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document.write( "Consider the function f(x)= x^2+4x+1 \r<BR>\n" );
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document.write( "Find h, the x-coordinate of the vertex of this parabola.<BR>\n" );
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document.write( "Substitute the two whole number values 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( "h=__|___<BR>\n" );
document.write( "____|___<BR>\n" );
document.write( "____|___ </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #66844 by </B><A HREF=/tutors/aboutme.mpl?userid=mathispowerful><B>mathispowerful(115)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathispowerful><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=66844\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=f%28x%29=+x%5E2%2B4x%2B1 ALIGN=MIDDLE  ALT=\"f%28x%29=+x%5E2%2B4x%2B1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Let's find the vertex first\r<BR>\n" );
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document.write( "in standard format of quadratic equation <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+ax%5E2%2Bbx%2Bc ALIGN=MIDDLE  ALT=\"y+=+ax%5E2%2Bbx%2Bc\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "the x value of vertex is given by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-b%2F%282a%29 ALIGN=MIDDLE  ALT=\"-b%2F%282a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "in your function, a=1, b =4, so \r<BR>\n" );
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document.write( "x = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-4%2F%282%2A1%29 ALIGN=MIDDLE  ALT=\"-4%2F%282%2A1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > = -2\r<BR>\n" );
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document.write( "then f(-2) = -3\r<BR>\n" );
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document.write( "so vertex is (-2, -3)\r<BR>\n" );
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document.write( "Second part:\r<BR>\n" );
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document.write( " X  ---------Y<BR>\n" );
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document.write( "-4  -------- 1<BR>\n" );
document.write( "-3 -------- -2           <BR>\n" );
document.write( "-2 -------- -3<BR>\n" );
document.write( "-1 -------- -2<BR>\n" );
document.write( "0  --------  1\r<BR>\n" );
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document.write( "from these numbers, you can see that they are symmetric, that's the characteristic of a parabola </SPAN>\n" );
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