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Using determinants, find the value of \( \lambda \) if the points \( (1, -5) \), \( (-4, 5) \), and \( (\lambda, 7) \) are collinear.

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For collinearity using determinants: If determinant of 3×3 matrix = 0, points lie on the same straight line.

Updated On: Mar 1, 2026

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