Question

What is the axis of symmetry of the parabola given by the equation y = 3(x – 9)2 – 12?

Answer 1

find the vertex

Answer 2

The axis of symmetry of \[y=a(x-h)^2+k\] is \[x=h\] in this case, h=9, so the axis of symmetry is \[x=9\] (since h=9)