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Verified answer
(x, y) dicerminkan terhadap (a, b)p (2a - x, 2b - y) = a'(-2, 4)
(a, b) = (3, 2)
(2(3) - x, 2(2) - y)
(6 - x, 4 - y) = (-2 , 4)
maka
6 - x = -2
x = 8
4 - y = 4
y = 4 - 4
y = 0
pusat koordinatnya (8, 0)