document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=878130>Question 878130</A>: <I><SPAN STYLE=\"word-break: break-all;\"> name direction vertex Axis of symmetry focus diectrix of the parabola\r<BR>\n" );
document.write( "\n" );
document.write( "x-1=1/4(y-8)^2\r<BR>\n" );
document.write( "\n" );
document.write( "please help  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #529729 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=529729\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> name direction vertex, Axis of symmetry, focus, directrix of the parabola <BR>\n" );
document.write( "x-1=1/4(y-8)^2 <BR>\n" );
document.write( "(y-8)^2=4(x-1)<BR>\n" );
document.write( "This is an equation of a parabola that opens rightward.<BR>\n" );
document.write( "Its basic form: (y-k)^2=4p(x-k), (h,k)=coordinates of the vertex<BR>\n" );
document.write( "For given parabola:<BR>\n" );
document.write( "vertex: (1,8)<BR>\n" );
document.write( "axis of symmetry: y=8<BR>\n" );
document.write( "4p=4<BR>\n" );
document.write( "p=1<BR>\n" );
document.write( "focus(2,8)<BR>\n" );
document.write( "directrix: x=0, or y-axis<BR>\n" );
document.write( "see graph below:<BR>\n" );
document.write( "y=±(4x-4)^.5+8<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+300%2C+-10%2C+10%2C+-1%2C+20%2C%284x-4%29%5E.5%2B8%2C-%284x-4%29%5E.5%2B8%29+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );