Question 764645
The only diverse set of details come with graphing the parabola.  It is written as x as a function of y.  The symmetry axis is horizontal, and has been off-set from standard downward by 2 units, as is the whole parabola.  The parabola opens to the right, and the vertex is at (0, -2).  We can find all this information just through understanding how standard form for a parabola equation works.  


Standard Form for a Parabola Parallel to Horizontal Axis:
{{{highlight(x-h=a(y-k)^2)}}}
Center is (h,k)
Opens to left if {{{a<0}}}, and opens to right if {{{a>0}}}
Axis of Symmetry is {{{y=-k}}}



Lower branch of this parabola


{{{graph(250,250,-20,20,-20,20,-2-sqrt(x))}}}


Upper branch of this parabola

{{{graph(250,250,-20,20,-20,20,-2+sqrt(x))}}}