document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1040451>Question 1040451</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the vertex, focus and directrix of the parabola given by each equation. Sketch the graph.\r<BR>\n" );
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document.write( "a. x^2 = -4y<BR>\n" );
document.write( "b. (y+4)^2 = -4(x-2)<BR>\n" );
document.write( "c. x+y^2-3y+4 = 0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #655267 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39614)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=655267\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The form in which your first two examples are written are very convenient for the question.  Study these videos:<BR>\n" );
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document.write( "<a  rel=nofollow HREF=https://www.youtube.com/watch?v=M8LGsQMwwj4\"\">Derive equation for parabola given focus and directrix; vertex at orign</a><BR>\n" );
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document.write( "<a  rel=nofollow HREF=\"https://www.youtube.com/watch?v=Wworlx39KfQ\">Similar, but different orientation, and vertex not at origin</a>\r<BR>\n" );
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document.write( "Check this one for your last example:  <a  rel=nofollow HREF=\"https://www.youtube.com/watch?v=MD4AiN1Gsmc\">how to change quadratic equation from general to standard form, allowing you to figure out how to graph</a> </SPAN>\n" );
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