document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=95466>Question 95466</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the axis of symmetry.\r<BR>\n" );
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document.write( "y=x^2+3x-1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #69465 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=69465\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the axis of symmetry.\r<BR>\n" );
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document.write( "y=x^2+3x-1<BR>\n" );
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document.write( "Complete the square on the x terms and keep the equation balanced:<BR>\n" );
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document.write( "x^2+3x+? = y+1+?<BR>\n" );
document.write( "x^2+3x+(3/2)^2 = y+1+(3/2)^2<BR>\n" );
document.write( "(x+(3/2))^2 = y+4/4 + 9/4<BR>\n" );
document.write( "(x+(3/2))^2 = y+(13/4)<BR>\n" );
document.write( "This tells you:<BR>\n" );
document.write( "Vertex = (-3/2,-13/4)<BR>\n" );
document.write( "Axis of symmetry is x=-3/2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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