A triangle has vertices at R(1, 1), S(–2, –4), and T(–3, –3). The triangle is transformed according to the rule R0, 270°. What are the coordinates of S'?

A 270° rotation about the origin maps each point (x, y) to (y, −x). Applying this rule to S(−2, −4) gives S′ = (−4, 2), which is choice A.

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