document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=71234>Question 71234</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2) 	For the function y =  x2 - 4x - 5, perform the following tasks:<BR>\n" );
document.write( "a) 	Put the function in the form y = a(x - h)2 + k.<BR>\n" );
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document.write( "b) 	What is the equation for the line of symmetry for the graph of this function?<BR>\n" );
document.write( "Answer:	\r<BR>\n" );
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document.write( "c) 	Graph the function using the equation in part a.  Explain why it is not necessary to plot points to graph when using y = a (x – h)2 + k.<BR>\n" );
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document.write( "Explanation of graphing. \r<BR>\n" );
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document.write( "d) 	In your own words, describe how this graph compares to the graph of y = x2?\r<BR>\n" );
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document.write( "Answer:	\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #50954 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=50954\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2) For the function y = x2 - 4x - 5, perform the following tasks:<BR>\n" );
document.write( "a) Put the function in the form y = a(x - h)2 + k.<BR>\n" );
document.write( "Answer: <BR>\n" );
document.write( "Show work in this space<BR>\n" );
document.write( "x^2-4x +? = y+5<BR>\n" );
document.write( "Complete the square on the left side and keep the equation balanced.<BR>\n" );
document.write( "x^2-4x+4 = y+5+4<BR>\n" );
document.write( "Factor to get:<BR>\n" );
document.write( "(x-2)^2 = y+9<BR>\n" );
document.write( "y=(x-2)^2 - 9 \r<BR>\n" );
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document.write( "b) What is the equation for the line of symmetry for the graph of this function?<BR>\n" );
document.write( "Answer:<BR>\n" );
document.write( "EQUATION: x=2 is the line of symmetry. \r<BR>\n" );
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document.write( "c) Graph the function using the equation in part a. Explain why it is not necessary to plot points to graph when using y = a (x – h)2 + k.<BR>\n" );
document.write( "Show graph here. \r<BR>\n" );
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document.write( "Explanation of graphing. <BR>\n" );
document.write( "vertex is at (h,k); axis of symmetry is x=h; If a is positive the parabola<BR>\n" );
document.write( "opens up; if a is negative the parabola opens down.\r<BR>\n" );
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document.write( "d) In your own words, describe how this graph compares to the graph of y = x2? <BR>\n" );
document.write( "Answer: <BR>\n" );
document.write( "y=(x-2)^2 - 9 <BR>\n" );
document.write( "Start with y=x^2<BR>\n" );
document.write( "the (x-2) moves the graph two to the right<BR>\n" );
document.write( "the -9 moves all points of the graph 9 down\r<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "stan H. </SPAN>\n" );
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