Precalc
posted by Jack .
I am given the graph of y=f(x) and I am asked to sketch the graph of y=2f(x). How do I move and/or rotate the given graph?

if you have f(x), then to get f(x) you just flip the graph over the yaxis
Now, scale that by a factor of 2 to get 2f(x)
Now, flip the whole shebang over the xaxis to get 2f(x)
play around with online graphing sites and you can see what happens by doing these kinds of transformations