The point located at (−2.5, 1) is not one of the points listed in the provided description of M, N, O, P, Q, and R.
- Points N and M are in quadrant 2, which means both x-coordinates are negative and positive respectively, negating these options.
- Point O is in quadrant 3, so it cannot have a positive y-coordinate and a negative x-coordinate.
- Point P is in quadrant 4, thus also cannot have a negative x-coordinate.
Therefore, the correct answer is that none of the points M, N, O, or P are located at (−2.5, 1).