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(-3) - 1/ 2 - (-4) = -4/6 = -2/3
jawabannya b.
x₂= 2 y₂= -3
m :
(y₂ - y₁) / (x₂ - x₁)
(-3 - 1) / (2 - (-4)
-4 / (2 + 4)
-4 / 6
-2/3 (b)