document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=93470>Question 93470</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0395977258/algebrahomeworkh></A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> (a) What is the equation of a parabola with vertex (0,0) and the focus (0,4)?<BR>\n" );
document.write( "(b)DRAW its graph on a grid      <BR>\n" );
document.write( "(a)_____________________<BR>\n" );
document.write( "(b)_____________________    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 #68133 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=68133\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (a) What is the equation of a parabola with vertex (0,0) and the focus (0,4)?<BR>\n" );
document.write( "(b)DRAW its graph on a grid   <BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Vertex Form for a parabola: (x-h)^2 = 4p(y-k)<BR>\n" );
document.write( "vertex at (0,0) means h = k = 0<BR>\n" );
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document.write( "You now have x^2 = 4py<BR>\n" );
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document.write( "focus at (0,4) means the distance from vertex to focus = 4<BR>\n" );
document.write( "p = 4<BR>\n" );
document.write( "4p = 16<BR>\n" );
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document.write( "EQUATION:<BR>\n" );
document.write( "16y = x^2<BR>\n" );
document.write( "y = (1/16)x^2<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C%281%2F16%29x%5E2%29 ALIGN=MIDDLE  ALT=\"graph%28400%2C300%2C-10%2C10%2C-10%2C10%2C%281%2F16%29x%5E2%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "===============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );