Question 923613
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

y=2(x+4)^2-5  V(-4, -5),  Opens Up  a = 2 > 0,  x = -4 is the Line of Symmetry


{{{drawing(300,300,   -10,10,-10,10,  blue(line(-4,10,-4,-10))  ,  
 grid(1),

circle(-4,-5,0.4),
graph( 300, 300, -10,10,-10,10,0, 2(x+4)^2-5))}}}