document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=795289>Question 795289</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Identify the line of symmetry, the vertex, the y - intercept, and the x - intercept\r<BR>\n" );
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document.write( "f(x) = x^2 - 10x + 9  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #480872 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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/cgi-bin/show-face.mpl?user=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=480872\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x) = x^2 - 10x + 9<BR>\n" );
document.write( "Factorised:<BR>\n" );
document.write( "(x - 1)(x - 9) = 0<BR>\n" );
document.write( "Cuts x axis at (1,0) and (9,0)<BR>\n" );
document.write( "Cuts y axis when x = 0<BR>\n" );
document.write( "x^2 - 10x + 9<BR>\n" );
document.write( "(0)^2 - 10(0) + 9<BR>\n" );
document.write( "y = 9<BR>\n" );
document.write( "Cuts y axis at (0, 9)<BR>\n" );
document.write( "Line of symmetry is half way between<BR>\n" );
document.write( "x = 1 and x = 9<BR>\n" );
document.write( "8 units/ 2<BR>\n" );
document.write( "= 4 units<BR>\n" );
document.write( "at x = 5. <BR>\n" );
document.write( "Vertex = Put x = 5 into f(x) to get y coord.<BR>\n" );
document.write( "y = 5^2 - 10*5 + 9<BR>\n" );
document.write( "y = 25 - 50 + 9<BR>\n" );
document.write( "y = -16<BR>\n" );
document.write( "So vertex at (5, -16)<BR>\n" );
document.write( "Hope this helps.<BR>\n" );
document.write( ";-)<BR>\n" );
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