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3x +2y -8 = 0
2y = -3x +8
y = -3/2x +8/2
y = -3/2x +4
Maka, m = -3/2
y -y₁ = m(x -x₁)
y -(-4) = -3/2(x -4)
y +4 = -3/2x +12/2
y +4 = -3/2x +6 dikali 2 untuk menghilangkan penyebut, sehingga
2y +8 = -3x +12
2y = -3x +12 -8
2y = -3x +4
3x +2y -4 = 0
Itu jawabannya.