Respuesta :
the vertex is (0,-9)
the axis of symmetry is the y-axis and its equation is: x=0
the axis of symmetry is the y-axis and its equation is: x=0
2x^2 - 9 is symmetrical about the y axis
the vertrex is at (0,9)
axis of symmetry is x = 0
the vertrex is at (0,9)
axis of symmetry is x = 0