NCERT Miscellaneous Exercise Q9 - Straight Lines

Question: Prove that y = m1x + c1, y = m2x + c2 and y = m3x + c3 are concurrent if m1(c2 - c3) + m2(c3 - c1) + m3(c1 - c2) = 0.

Answer: m1(c2 - c3) + m2(c3 - c1) + m3(c1 - c2) = 0.

Full step-by-step NCERT solution with diagrams on Something by Zero.

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