Question 416376
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b>
Hi
 The standard form is {{{(x -h)^2 = 4p(y -k)}}}, where the focus is (h,k + p) 
  x^2 = 4py     p = -3    4p = -12
 x^2 = -12y  OR  y = -(1/12)x^2
{{{drawing(300,300,   -6, 6, -6, 6, grid(1),
circle(0, -3,0.3),
graph( 300, 300, -6, 6, -6, 6,0, (-1/12)x^2))}}}