\n" );
document.write( "Hi,
\n" );
document.write( "y= -x^2 - 4x - 3 Completing Square to put into Vertex Form
\n" );
document.write( "y = -(x+2)^2 + 4 - 3
\n" );
document.write( "y = -(x+2)^2 + 1 ||Parabola opens downward (-1 <0) along x = -2 , V(-2,1
\n" );
document.write( "
\n" );
document.write( "See below descriptions of various conics
\n" );
document.write( "Standard Form of an Equation of a Circle is
\n" );
document.write( "where Pt(h,k) is the center and r is the radius\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " Standard Form of an Equation of an Ellipse is
\n" );
document.write( "where Pt(h,k) is the center. (a positioned to correspond with major axis)
\n" );
document.write( " a and b are the respective vertices distances from center
\n" );
document.write( " and ±
are the foci distances from center: a > b\r
\n" );
document.write( "\n" );
document.write( "Standard Form of an Equation of an Hyperbola opening right and left is:
\n" );
document.write( "
where Pt(h,k) is a center with vertices 'a' units right and left of center
\n" );
document.write( "and foci
units right and left of center along y = k\r
\n" );
document.write( "\n" );
document.write( "Standard Form of an Equation of an Hyperbola opening up and down is:
\n" );
document.write( "
where Pt(h,k) is a center with vertices 'b' units up and down from center,
\n" );
document.write( "and foci
units units up and down from center, along x = h\r
\n" );
document.write( "\n" );
document.write( "the vertex form of a Parabola opening up(a>0) or down(a<0),
where(h,k) is the vertex.
\n" );
document.write( "The standard form is
, where the focus is (h,k + p)\r
\n" );
document.write( "\n" );
document.write( "the vertex form of a Parabola opening right(a>0) or left(a<0),
where(h,k) is the vertex.
\n" );
document.write( "The standard form is
, where the focus is (h +p,k )
\n" );
document.write( "
\n" );
document.write( "