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Maka, m (gradien) = 2/3
y -y₁ = m(x -x₁)
y -(-2) = 2/3(x -3)
y +2 = 2/3x -6/3 dikali 3 untuk menghilangkan penyebut, sehingga
3y +6 = 2x -6
3y = 2x -6 -6
3y = 2x -12
2x -3y -12 = 0
Itu jawabannya.
y = 2/3x - 5
2/3x - y = 5
2/3x - y = 5
2/3(3) - (-2) = 2 - (-2) = 4
2/3x - y = 4