document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=201859>Question 201859</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can someone please help me with this problem.\r<BR>\n" );
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document.write( "State whether the paraabola opens upward or downward.\r<BR>\n" );
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document.write( "f(x)=-x^2-18 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #152119 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=152119\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> f(x) =y= - x^2 -18<BR>\n" );
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document.write( "(y+18) =-1 x^2,,,,,,std  form  (y-k) =A (x-h)^2<BR>\n" );
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document.write( "vertex at ( 0,-18)<BR>\n" );
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document.write( "since  A  is  negative,  pointing  down<BR>\n" );
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document.write( "double  check,,graph on  either  side  of  vertex<BR>\n" );
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document.write( "x= 1,,,,y=-19<BR>\n" );
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document.write( "x=-1,,,,,y=-19,,,,,therefore  pointing  down<BR>\n" );
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