Describe the transformations.

Question

1. g(x)=(2x)^2

2. g(x)=-1/2x^2

Answer 1

if f(x) = x^2,

1. scale by 4 in y direction
or, scale by 1/2 in x direction

2.
scale by 1/2 in y direction
reflect in x-axis

Answer 2

I mean is it vertically/horizontally stretched/compressed? By what factor?