Thread: Secant Question

I was given the following problem to graph:
y=3sec(2(x-pi))-3

I know the amplitude is 3 and the period is pi and the vertical shift is 3 down, but is the phase shift Pi or Pi/2?
Because if it is Pi/2 the graph of cosine starts at -3....which would contradict the amplitude being 3. And if it is Pi that would mean the phase shift is from Pi to Pi so there would be no shift...

horizontal shift is units to the right