Performing and Sequencing Rigid Transformations Practice Test

Quadrilateral $$PQRS$$ is transformed by a rotation of $$90°$$ counterclockwise about point $$T(3, 1)$$ to create quadrilateral $$P'Q'R'S'$$. If vertex $$P$$ has coordinates $$(7, 3)$$, what are the coordinates of $$P'$$?

Two congruent right triangles, $$\triangle ABC$$ and $$\triangle DEF$$, are positioned in the coordinate plane such that they do not overlap. Triangle $$ABC$$ has a right angle at $$C$$, and triangle $$DEF$$ has a right angle at $$F$$. If $$\triangle ABC$$ can be mapped onto $$\triangle DEF$$ using exactly two rigid transformations, and the first transformation is a reflection across the $$y$$-axis, which statement about the second transformation must be true?