document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=192147>Question 192147</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0534404693/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Find the vertex, focus and directrix of the parabola. [NOTE: fractions must be reduced and mixed numbers have to be reported as improper fractions]\r<BR>\n" );
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document.write( "y = x2 - 20x + 10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #144194 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=144194\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=%28x%5E2-20x%2B100%29-100%2B10 ALIGN=MIDDLE  ALT=\"y=%28x%5E2-20x%2B100%29-100%2B10\"   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=y=%28x-10%29%5E2-90 ALIGN=MIDDLE  ALT=\"y=%28x-10%29%5E2-90\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "vertex is at (10,-90)<BR>\n" );
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document.write( "focus is at (10,-90 + 1/4) (10,89 3/4)(10,359/4)<BR>\n" );
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document.write( "directrix is at y=-90-1/4 =-90 1/4.....y=-361/4 </SPAN>\n" );
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