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a) = (1,4) dan = (3,-6)
2(y - 4) = -10 (x - 1)
2y - 8 = -10x + 10
2y = -10x + 18
y = -5x + 9
b) = (1,4) dan = (-3,-6)
-4(y - 4) = -10 (x - 1)
-4y + 16 = -10x + 10
-4y = -10x - 6
-2y = -5x - 3
5x + 2y = 3