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P₂ = (4, - 3)
Aplicamos fórmula de la ecuación conocidos dos puntos.
y₂ - y₁
y - y₁ = ------------ (x - x₁)
x₂- x₁
- 3 - 2
y - 2 = -------------- (x - (- 5))
4 - (- 5)
- 5
y - 2 = ---------- (x + 5)
4 + 5
- 5
y - 2 = ----------- (x + 5)
9
9y - 18 = - 5x - 25
5x + 9y - 18 + 25 = 0
5x + 9y + 7 = 0
La ecuación es :
5x + 9y + 7 = 0