Question 20 • Geometry
The translation moves S(3, −5) to S′(−4, 1), so the translation vector is (−7, 6). To recover the pre-image, add (7, −6) to each image vertex; this gives R(−1, −5), S(3, −5), T(3, −9), and U(−1, −9). The point (−1, −6) lies on the side from R to U, so the correct choice is C, (−1, −6).
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