Question 738112
Yes, it is a POINT with two coordinates, x and y. The value of x is the value of the axis of symmetry, -b/(2a). You get the value of y by substituting that value of x into the parabolic equation of y and solving for y. 
For example, Let the parabolic function  be
(1) y = x^2 + 4x + 2
The axis of symmetry is
(2) x = -b/(2a) or
(3) x = -4/2 or
(4) x = -2
Now put (4) into (1) and get
(5) y = (-2)^2 + 4*(-2) + 2 or
(6) y = 4 - 8 + 2 or
(7) y = -2
At the point (-2,-2) the parabola reaches a minimum (in this case, because the parabola opens upward).

      {{{graph(100,100,-6,4,-4,7,0,x^2+4*x+2)}}}