Math Help - Finding Axis of symmetry

1. Finding Axis of symmetry

Hi,

I'm having trouble finding the axis of symmetry, I have the formula x= -b/2a

but

for the equation

f(x)=x^2-3

there isn't a "b", so do I just use 0 for b? and 1 for a?

thank you.

2. Originally Posted by ohiostatefan

there isn't a "b", so do I just use 0 for b? and 1 for a?
Yes and yes.

3. thanks!!