document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=929319>Question 929319</A>: <I><SPAN STYLE=\"word-break: break-all;\"> give the focus, directrix, and axis for the parabola: y^2=-4x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #564469 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=564469\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> give the focus, directrix, and axis for the parabola: y^2=-4x<BR>\n" );
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document.write( "y^2=-4x<BR>\n" );
document.write( "This is an equation of a parabola that opens leftward with vertex at the origin<BR>\n" );
document.write( "Its basic form of equation: (y-k)^2=4p(x-h), (h,k)=coordinates of the vertex.<BR>\n" );
document.write( "vertex:(0,0)<BR>\n" );
document.write( "axis of symmetry: x-axis or y=0<BR>\n" );
document.write( "4p=4<BR>\n" );
document.write( "p=1<BR>\n" );
document.write( "focus: (-1,0) (p-distance to the left of vertex on the axis of symmetry)<BR>\n" );
document.write( "directrix: x=1 (p-distance to the right of vertex on the axis of symmetry) </SPAN>\n" );
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