Question 670147
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
 y = (x+4)^2
I. A parabola opening Upward
II. V(-4,0) 
III.  Line of symmetry is x = -4
{{{drawing(300,300,   -6, 6, -6, 6, blue(line(-4,6,-4,-6))  ,   grid(1),
circle(-4, 0,0.3),
graph( 300, 300, -6, 6, -6, 6,0,(x+4)^2))}}}
the vertex form of a Parabola opening up(a>0) or down(a<0), {{{y=a(x-h)^2 +k}}} 
where(h,k) is the vertex  and  x = h  is the Line of Symmetry