document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=768363>Question 768363</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Write an equation for a graph that is the set of all points in the plane that are equidistant from the point F(5, 0) and the line x = -5.\r<BR>\n" );
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document.write( "is the following corrct:  x=-1/20 y^2\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #468257 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</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=468257\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> General point (x,y).<BR>\n" );
document.write( "Find distance from (-5,y) to (x,y).  Find distance from (5,0) to (x,y).<BR>\n" );
document.write( "EQUATE them.  You would use distance formula for both of those distance expressions.\r<BR>\n" );
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document.write( "Obtain <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28x%2B5%29%5E2=%28x-5%29%5E2%2By%5E2 ALIGN=MIDDLE  ALT=\"%28x%2B5%29%5E2=%28x-5%29%5E2%2By%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10x=-10x%2By%5E2 ALIGN=MIDDLE  ALT=\"10x=-10x%2By%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=20x=y%5E2 ALIGN=MIDDLE  ALT=\"20x=y%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28x=%281%2F20%29y%5E2%29 ALIGN=MIDDLE  ALT=\"highlight%28x=%281%2F20%29y%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "I had drawn a representative sketch first and find vertex at left, parabola opening to the right.  Directrix is to the left of the vertex and focus is to the right of the vertex. </SPAN>\n" );
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