Hi
y^2= -3x  Parabola opening to the left with V(0,0) Line of symmetry the y=axix
  4p = -3  p = (-3/4)
Standard Form of an Equation of a Circle is 
 
where Pt(h,k) is the center and r is the radius
 Standard Form of an Equation of an Ellipse is 
where Pt(h,k) is the center and a and b  are the respective vertices distances from center.
Standard Form of an Equation of an Hyperbola is  
 where Pt(h,k) is a center  with vertices 'a' units right and left of center.
Standard Form of an Equation of an Hyperbola opening up and down is:
  
 where Pt(h,k) is a center  with vertices 'b' units up and down from center.
Using the vertex form of a parabola opening up or down, 
 where(h,k) is the vertex
 The standard form is 
, where  the focus is (h,k + p)