Question 760114
That means, replace x with 3x, and then simplify.

{{{f(3x)=(3x)/((3x)^2-4)}}}
Not much more you can do with it.


{{{3x/(9x^2-4)=(3x)/((3x+2)(3x-2))}}} which would be helpful in graghing since it shows two vertical asymptotes at x=-2/3 and x=2/3; and a root is at x=0.