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Let the equation of the straight line l be (M & # 178; - 2m-3) x - (2m ^ 2 + m-1) y = 2m-6, and determine the value of the real number m according to the following conditions. The straight line L passes through the fixed point P (- 1,1)
The equation of the line L is (M & # 178; - 2m-3) x - (2m ^ 2 + m-1) y = 2m-6. The line L passes through the fixed point P (- 1,1)
∴﹣m²＋2m＋3－2m²－m＋1＝2m－6 ∴3m²＋m－10＝0
(M + 2) (3m-5) = 0 M = - 2 or M = 5 / 3
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