The direction ratios of the line joining the points A(1, 2, −3) and B(−1, −2, 1) are: A. −2, −4, 4 B. 2, 4, 4 C. −2, 0, 4 D. 0, −4, 4 Answer: A) −2, −4, 4 Explanation: Direction ratios are proportional to x₂ − x₁, y₂ − y₁, z₂ − z₁ = −1 − 1, −2 − 2, 1 − (−3) = −2, −4, 4.

imo class 12 three dimensional geometry

The direction ratios of the line joining the points A(1, 2, −3) and B(−1, −2, 1) are:

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The direction ratios of the line joining the points A(1, 2, −3) and B(−1, −2, 1) are:

Answer: A) −2, −4, 4

Explanation: Direction ratios are proportional to x₂ − x₁, y₂ − y₁, z₂ − z₁ = −1 − 1, −2 − 2, 1 − (−3) = −2, −4, 4.