Hi all!

Ive been having some trouble with the same types of questions over and over again. I cannot seem to get them right..

**I have trouble finding the x-intercepts, after a series of transformations to the original graph. **
Here is an example:

**y = 2-3cos 2(θ - π/2)** **I know that:** **- amplitude: 3** **- reflection about the x-axis** **- translation of π/2 units in the positive direction of the x-axis** **- dilation of factor 1/2 from the y-axis** **- translation of 2 units in the positive direction of the y-axis**
I understand

**how** it has been transformed from the original

**cos graph**, but i can't get the x-intercepts after all the transformations. How do i start it? Can anyone give me a good method??

Anyones help would be greatly appreciated.