document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=2438>Question 2438</A>: <I><SPAN STYLE=\"word-break: break-all;\"> y=x(2)-5 find the vertex tell if it opens up or down left or right and focus and directrix </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #1036 by </B><A HREF=/tutors/aboutme.mpl?userid=khwang><B>khwang(438)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=khwang><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=1036\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> At least you should know how to type square correcly.<BR>\n" );
document.write( " y=x^2-5,<BR>\n" );
document.write( " or y+5 = x^2,<BR>\n" );
document.write( " vertex is (0,-5).<BR>\n" );
document.write( " Since y+5=x^2>=0, or y >= -5 the parabola opens up.\r<BR>\n" );
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document.write( " x^2 = 4*1/4(y+5)= 4a(y+5), a = 1/4<BR>\n" );
document.write( " Focus = (0,-5+1/4) = (0,-19/4)<BR>\n" );
document.write( " Directrix: y = -5 -1/4 = -21/4\r<BR>\n" );
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document.write( " Kenny\r<BR>\n" );
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document.write( " </SPAN>\n" );
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