to the right vs in the right

English as a Second Language English Vocabulary, Grammar and Idioms
1
  1. The MOSFET operates in its saturation region for points to the right of the dashed line.
  2. The MOSFET operates in its saturation region for points in the right of the dashed line.
    Is #2 correct? If so, which one is better?
2

Only the first is correct.

3

Well, I didn’t know it is wrong!
Here is the definition of the phrase “in the right” in a dictionary:
in the right
If you are in the right, what you are doing is morally or legally correct.
I know I’m in the right. You are not in the right on this point.
It has a different meaning!

4

That’s because it is a different usage.