NCERT Exercise 9.3 Q10 - Straight Lines

Question: Prove that the equation of a line through (x1, y1) with normal vector (A, B) is A(x - x1) + B(y - y1) = 0.

Answer: A(x - x1) + B(y - y1) = 0.

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