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(x,y) → (y,x)
A(4,2) → A' (2,4)
B(-3,-4) → B' (-4,-3)
C(5,-3) → C' (-3,5)
semoga membantu ^^
x' = y
y' = x
A = (4,2) bayangannya A' = (2,4)
B = (-3,-4) bayangannya B' = (-4,-3)
C = (5,-3) bayangannya C' = (-3,5)