document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=982003>Question 982003</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A building has an entry the shape of a parabolic arch 22 ft high and 28 ft wide at the base as shown below.\r<BR>\n" );
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document.write( "Find an equation for the parabola if the vertex is put at the origin of the coordinate system. \r<BR>\n" );
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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 #602905 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</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=602905\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Vertex expected at  (0,0).<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=a%28x-0%29%5E2%2B0 ALIGN=MIDDLE  ALT=\"y=a%28x-0%29%5E2%2B0\"   DISABLED_style= \"max-width:90%; height:auto;\" > using standard form.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%3C0 ALIGN=MIDDLE  ALT=\"a%3C0\"   DISABLED_style= \"max-width:90%; height:auto;\" > because concave downward.\r<BR>\n" );
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document.write( "Sketching the graph helps.<BR>\n" );
document.write( "y value at origin is  -22, and because 28 ft wide, 14 feet from line of symmetry to either end at the base.  Two points on the parabola are  (14,-22) and (-14,-22).  You can find \"a\" using either of these points.<BR>\n" );
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document.write( "Sketch the graph and think about that discussion.\r<BR>\n" );
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document.write( "FIND COEFFICIENT a.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=ax%5E2 ALIGN=MIDDLE  ALT=\"y=ax%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=y%2Fx%5E2 ALIGN=MIDDLE  ALT=\"a=y%2Fx%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=%28-22%29%2F%2814%29%5E2 ALIGN=MIDDLE  ALT=\"a=%28-22%29%2F%2814%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=-22%2F196 ALIGN=MIDDLE  ALT=\"a=-22%2F196\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%28a=-11%2F108%29 ALIGN=MIDDLE  ALT=\"cross%28a=-11%2F108%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=-11%2F98 ALIGN=MIDDLE  ALT=\"a=-11%2F98\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "FINISHED FINDING EQUATION<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cross%28y=-%2811%2F108%29x%5E2%29 ALIGN=MIDDLE  ALT=\"cross%28y=-%2811%2F108%29x%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight%28y=-%2811%2F98%29x%5E2%29 ALIGN=MIDDLE  ALT=\"highlight%28y=-%2811%2F98%29x%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "---<BR>\n" );
document.write( "graph(300,300,-16,16,2,-30,-11x^2/98)<BR>\n" );
document.write( "Rendering tags are not included because the graph was shown incorrectly, no matter how the function was adjusted.  Use a graphing tool to see the graph properly.  Go to google search engine and just put y=-(11/98)*x^2 into the search text field and click ENTER or GO.  You should see the graph correctly. </SPAN>\n" );
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