document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=606410>Question 606410</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write 4 equations in vertex form of parabolas that open up, down, left, and right. And tell me the vertex of each. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #382120 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=382120\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Write 4 equations in vertex form of parabolas that open up, down, left, and right. And tell me the vertex of each.<BR>\n" );
document.write( "All vertices at origin or (0,0)<BR>\n" );
document.write( "parabolas open up, down, left and right respectively as follows:<BR>\n" );
document.write( "x^2=4py <BR>\n" );
document.write( "x^2=-4py<BR>\n" );
document.write( "y^2=-4px<BR>\n" );
document.write( "y^2=4px<BR>\n" );
document.write( "p=distance from focus and directrix to vertex on the axis of symmetry, that is, vertex is half way between focus and directrix </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );