document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=492586>Question 492586</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have to find the y-intercept, the equation of the axis of symmetry, and the x-coordinator of the vertex. 2. make a table of values that includes the vertex 3. use the information to graph the function.  My problem is, I do not understand the rules for solving the equation.\r<BR>\n" );
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document.write( "f(x)=x to the second power - 8x + 15.  please help.  I would also like to know the explanaions as to what equation to use to solve the problem. <BR>\n" );
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document.write( "Thanks, Deonte </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #335098 by </B><A HREF=/tutors/aboutme.mpl?userid=WhuddaPeach><B>WhuddaPeach(6)</B></A><img src=\"/images/stars/stars-05.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=WhuddaPeach><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=WhuddaPeach><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=335098\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> It is a polynomial. You have to factor it.<BR>\n" );
document.write( "This means<BR>\n" );
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document.write( "The zeroes are 3 and 5, so the line passes through these points at the x axis. These points are the vertices.<BR>\n" );
document.write( "It is an upward facing parabola, because the coefficient in front of (x-s)(x-5) is 1, though you don't see it.<BR>\n" );
document.write( "The axis of symmetry is 4, because that is halfway between the two zeroes.<BR>\n" );
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