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A (-1, 3) -----> A' (2 . 4 - -1, 3) = (2 . 4 + 1, 3) = (8 + 1, 3) = (9, 3)
Rumus = A (a, b) -----> A' (-a, b)
A' (9, 3) -----> A" (-9, 3)
Jadi jawabannya adalah A" (-9, 3)