document.write( "Question 477604: 1.The equation of the parabola whose focus is at (-3, 0) and directrix x = 3 is: \r
\n" ); document.write( "\n" ); document.write( "2.The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is: \r
\n" ); document.write( "\n" ); document.write( "3.The equation of the parabola whose focus is at (7, 0) and directrix at x = -7 is: \n" ); document.write( "
Algebra.Com's Answer #328567 by lwsshak3(11628)\"\" \"About 
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1.The equation of the parabola whose focus is at (-3, 0) and directrix x = 3 is:
\n" ); document.write( "2.The equation of the parabola whose focus is at (0, 5) and directrix at y = -5 is:
\n" ); document.write( "3.The equation of the parabola whose focus is at (7, 0) and directrix at x = -7 is:
\n" ); document.write( "**
\n" ); document.write( "1. Parabola opens leftwards.
\n" ); document.write( "Axis of symmetry: y=0 or x-axis
\n" ); document.write( "Vertex=(0,0)
\n" ); document.write( "p=distance from vertex to focus or to directrix on the axis of symmetry=3
\n" ); document.write( "Equation:
\n" ); document.write( "y^2=-4px
\n" ); document.write( "y^2=-12x
\n" ); document.write( "..
\n" ); document.write( "2. Parabola open upwards.
\n" ); document.write( "Axis of symmetry: x=0 or y-axis
\n" ); document.write( "Vertex=(0,0)
\n" ); document.write( "p=distance from vertex to focus or to directrix on the axis of symmetry=5
\n" ); document.write( "Equation:
\n" ); document.write( "x^2=4py
\n" ); document.write( "x^2=20y
\n" ); document.write( "..
\n" ); document.write( "3.Parabola opens rightwards.
\n" ); document.write( "Axis of symmetry: y=0 or x-axis
\n" ); document.write( "Vertex=(0,0)
\n" ); document.write( "p=distance from vertex to focus or to directrix on the axis of symmetry=7
\n" ); document.write( "Equation:
\n" ); document.write( "y^2=4px
\n" ); document.write( "y^2=28x \n" ); document.write( "
\n" );