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a = 2
b = 3
(x1,y1) = (3,4)
x1 = 3
y1 = 4
bx - ay = bx1 - ay1
3x - 2y = 3(3) - 2(4)
3x - 2y = 9 - 8
3x - 2y = 1
atau
3x - 2y - 1 = 0
3y = -2x +7
y = -2/3x +7/3
Maka, m₁ = -2/3
m₁ . m₂ = -1
-2/3 . m₂ = -1
m₂ = -1 per -2/3
m₂ = 3/2
y -y₁ = m(x -x₁)
y -4 = 3/2(x -3)
y -4 = 3/2x -9/2 dikali 2 untuk menghilangkan penyebut, sehingga
2y -8 = 3x -9
2y = 3x -9 +8
2y = 3x -1
3x -2y -1 = 0
Itu jawabannya.