1.the coordinates of the vertices of △rst are r(−4, −1) , s(−1, −1) , and t(−4, −2) . the coordinates of the vertices of △r′s′t′ are r′(1, −2) , s′(1, 1) , and t′(2, −2) . a sequence of transformations that maps △rst to △r′s′t′ is by . (pick 2 answers) a. translation 2 unit down b. translation 2 unit up c. rotation of 90 counterclockwise° about the origin d. rotation of 180° about the origin