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Hallas la pendiente(m)
Formula.
m = (y₂ - y₁)/(x₂ - x₁)
p₁(4 , - 1)
p₂(2, 5)
m = (5 - (- 1)) /(2 - 4)
m = (5 + 1)/ -2
m = - 6/2
m = - 3
Ecuació de la recta punto pendiente.
y - y₁ = m(x - x₁)
m = - 3
p₁(4 , - 1)
y - (- 1) = - 3(x - 4)
y + 1 = - 3x + 12
y = - 3x + 12 - 1
y = - 3x + 11
Respuesta.
y = - 3x + 11