Question 851199
  <pre><font size = 3 color = "indigo"><b>
Hi,
A (green), y=(x+2)^2 +1
B(Blue),  y=(x-2)^2-1
Note vertices, intercepts and their Lines of symmetry
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
{{{drawing(300,300,   -6, 6, -6, 6, grid(1), blue(line(2,6,2,-6)) ,blue(line(-2,6,-2,-6)) ,
circle(-2, 1,0.2),
circle(2, -1,0.2),
circle(0, 5,0.2),
circle(0, 3,0.2),
circle(3, 0,0.2),
circle(1, 0,0.2),

graph( 300, 300, -6, 6, -6, 6, 0 , (x+2)^2 +1, (x-2)^2 - 1) )}}}