Question

Find algebraically equation of the axis of symmetry in the coordinates of the vertex of the function f(x)= 2x^2-9

Answer 1

The vertex is (0,-9)
the axis of symmetry is the y-axis and its equation is: x=0

Answer 2

2x^2 - 9 is symmetrical about the y axis

the vertrex is at (0,9)

axis of symmetry is x = 0