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y - y₁ = m(x - x₁)
y - (-3) = -7/3(x - 2)
y + 3 = -7/3x + 14/3
3y + 9 = -7x + 14
3y = -7x + 14 - 9
3y = -7x + 5
Jadi persamaannya adalah 3y = -7x + 5 atau ditulis dalam bentuk ax + by + c = 0 menjadi 7x + 3y - 5 = 0.