Question

How do you find the y intercept, axis of symmetry and the vertex to graph the function `f(x)=2x^2-4`?

Answer 1

Y intercept (0,-4)
Axis of symmetry is the y axis
Minimum at (0,-4)

Explanation:

If `y=2x^2-4` put `x=0` to find the y intercept.

`-b/(2a) => 0/4=0` this is the x coordinate for the line of symmetry and the maximum or minimum point.