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B(-1,2)
x1 = 3, y1 = 4
x2 = -1, y2 = 2
Persamaan :
y -y₁ = x -x₁
y₂ -y₁ x₂ -x₁
y -4 = x -3
2 -4 -1 -3
y -4 = x -3
-2 -4
-4(y -4) = -2(x -3)
-4y +16 = -2x +6
-4y = -2x +6 -16
-4y = -2x -10
2x -4y +10 = 0
Itu jawabannya Kak.