document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=70089>Question 70089</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the axis of symmetry:<BR>\n" );
document.write( "Y= x^2 + 7x + 10\r<BR>\n" );
document.write( "\n" );
document.write( "ASm I suppose to find out what x equals?? Or I am just suppose to find a solution to the problem? Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #49942 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=49942\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the axis of symmetry:<BR>\n" );
document.write( "Y= x^2 + 7x + 10 <BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "You need to put the quadratic in vertex form by completing the square.<BR>\n" );
document.write( "This is vertex form: y-k=(x-h)^2 where (h,k) is the vertex.  x=h is <BR>\n" );
document.write( "then the axis of symmetry.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Rewrite the equation as:<BR>\n" );
document.write( "y-10 = x^2+7x<BR>\n" );
document.write( "Complete the square on the right side and keep the equation balanced:<BR>\n" );
document.write( "y-10+(7/2)^2 = x^2+7x+(7/2)^2<BR>\n" );
document.write( "Factor the right side; simplify the left side:<BR>\n" );
document.write( "y-10+49/4 = (x+(7/2))^2<BR>\n" );
document.write( "y+(9/4) = (x+(7/2))^2<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "So, -h=7/2<BR>\n" );
document.write( "h=-7/2<BR>\n" );
document.write( "x=-7/2 is the axis of symmetry<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "Here is the graph so you can see the axis of symmetry:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B7x%2B10%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C300%2C-10%2C10%2C-10%2C10%2Cx%5E2%2B7x%2B10%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
document.write( "\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );