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y = (-2/3)x + 2
m₁ = - 2/3
Persamaan garisnya:
y - b = m(x - a)
y - 3 = (- 2/3)(x + 2)
3y - 9 = - 2x - 4
2x + 3y - 5 = 0
2) 8y = - 4x - 24
y = (- 1/2)x - 3
m₁ = - 1/2
m₂ = 2
soal tidak lengkap karena tidak melalui titik berapa?