Answer:Gale's work is incorrect. The rotation would give him a horizontal line.
The transformations that are required to give A'B' as it is on the grid are a translation of 8 units to the right followed by a translation of 2 units down.
The rotation through 90 degrees clockwise and then a translation of 2 units down would give a horizontal line with B' at the same point as on the diagram but the point A' would be 6 units to the left on the point (-2, -2).
Explanation: