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m₁ = -a/b
= -3/4
m₁ × m₂ = -1
-3/4 × m₂ = -1
m₂ = 4/3
y - y₁ = m(x - x₁)
y - 2 = 4/3(x - 1)
y - 2 = 4/3x - 4/3
3y - 6 = 4x - 4
3y = 4x - 4 + 6
3y = 4x + 2
4y = -3x +8
y = -3/4x +8/4
y = -3/4x +2
Maka, m₁ = -3/4.
m₁ . m₂ = -1
-3/4 . m₂ = -1
m₂ = -1 per -3/4
m₂ = 4/3
y -y₁ = m(x -x₁)
y -2 = 4/3(x -1)
y -2 = 4/3x -4/3 dikali 3 untuk menghilangkan penyebut, sehingga
3y -6 = 4x -4
3y = 4x -4 +6
3y = 4x +2
4x -3y +2 = 0
Jadi, persamaannya adalah 4x -3y +2.
Itu jawabannya.