Question

Describe the transformations required to obtain the graph of the function f(x) from the graph of the function g(x).
f(x) = 9 cos x ; g(x) = cos x

Answer 1

1/9 f(x) = g(x)

thats a stretch factor (1 / 1/9) = 9
parallel to the y-axis

Answer 2

f(x) is nine times bigger than g(x), so f(x)'s line is 9 times higher than g(x).

Answer 3

thats correct