document.write( "Question 456944: Draw the parabola. Identify the focus and directrix and show them on the graph.
\n" ); document.write( "x+1/4y^2=0
\n" ); document.write( "Also find the
\n" ); document.write( "focus:
\n" ); document.write( "Directrix: \n" ); document.write( "
Algebra.Com's Answer #313713 by lwsshak3(11628)\"\" \"About 
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Draw the parabola. Identify the focus and directrix and show them on the graph.
\n" ); document.write( "x+1/4y^2=0
\n" ); document.write( "Also find the
\n" ); document.write( "focus:
\n" ); document.write( "Directrix:
\n" ); document.write( "..
\n" ); document.write( "x+1/4y^2=0
\n" ); document.write( "y^2/4=-x
\n" ); document.write( "y^2=-4x
\n" ); document.write( "..
\n" ); document.write( "Standard form for parabola: (y-k)^2=4p(x-h), with (h,k) being the (x,y) coordinates of the vertex.
\n" ); document.write( "For given parabola:
\n" ); document.write( "vertex at (0,0)
\n" ); document.write( "Axis of symmetry, y=0 or x-axis
\n" ); document.write( "Parabola opens leftward
\n" ); document.write( "4p=4
\n" ); document.write( "p=1
\n" ); document.write( "focus, (-1,0)
\n" ); document.write( "directrix, x=1
\n" ); document.write( "see following graph as a visual check on the answers.
\n" ); document.write( "..
\n" ); document.write( "y=(-4x)^.5
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+%28-4x%29%5E.5%2C-%28-4x%29%5E.5%29+\" \n" ); document.write( "
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