document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=424464>Question 424464</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My son's math homework. He didnt bring his book, so walk me through this one and then I will do the others please.\r<BR>\n" );
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document.write( "y=-x^2 + 8x -15 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #295898 by </B><A HREF=/tutors/aboutme.mpl?userid=Gersid><B>Gersid(33)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Gersid><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=295898\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You don't say what you want to do with this quadratic function.<BR>\n" );
document.write( "I expect that you are supposed to graph it.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y+=+-x%5E2%2B8x-15 ALIGN=MIDDLE  ALT=\"y+=+-x%5E2%2B8x-15\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "You can generate an input/output table to get a few points which you can then plot on a coordinate graph sheet.<BR>\n" );
document.write( "Then, with the careful use of a french curve, you can sketch the resulting parabola.<BR>\n" );
document.write( "Here's a start: Substitute a value for x and calculate the corresponding value of y.<BR>\n" );
document.write( "Input(x)|||Output(y)<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "****0***|||***-15***<BR>\n" );
document.write( "****1***|||****-8***<BR>\n" );
document.write( "****3***|||*****0***<BR>\n" );
document.write( "****4***|||*****1***<BR>\n" );
document.write( "****5***|||*****0***<BR>\n" );
document.write( "...and here's what it should look like:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C400%2C-5%2C10%2C-10%2C5%2C-x%5E2%2B8x-15%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C400%2C-5%2C10%2C-10%2C5%2C-x%5E2%2B8x-15%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );