Hi , I need help with the following . The first part is write down the equation of y= f(x) given the sketch attached .

The second part is to sketch the graph of 1+2 f(x - 90)

I don't know if the 180 on the sketch given is correct but i take the sketch given as y=2sin2x

and 1+2 f(x - 90) evaluates to 1-2sin2x . Is this right ?

Thank you