CBSE 2025 · Region 2 · Set 1 · Q9 · 1 mark
The equation of a line parallel to the vector $\displaystyle 3 \hat{i}+\hat{j}+2 \hat{k}$ and passing through the point $\displaystyle (4,-3,7)$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle x=3 \mathrm{t}+4, \mathrm{y}=\mathrm{t}-3, \mathrm{z}=2 \mathrm{t}+7$
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CBSE Class 12 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.