PLEASE HELP
The graph of f(x) and table for g(x)= f(kx) are given.

The graph shows an upward opening parabola labeled f of x that passes through a point negative 2 comma 8, a point negative 1 comma 2, a vertex 0 comma 0, a point 1 comma 2, and a point 2 comma 8.


x g(x)
−6 8
−3 2
0 0
3 2
6 8

What is the value of k?
k = 3
k is equal to one third
k = 6
k is equal to negative one sixth