Final answer:
The transformation from (-12, -10) to (12, -10) is a reflection over the y-axis as only the x-coordinate has changed sign.
Step-by-step explanation:
The transformation of the points (-12, -10) to (12, -10) is described as a reflection over the y-axis. This is because the x-coordinate has changed sign from negative to positive, while the y-coordinate has remained the same. Therefore, the point has been 'flipped' across the y-axis, which is a characteristic of a reflection.