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If $\bar{r} \cdot(2 \bar{i}+3 \bar{j}+4 \bar{k})=5, \bar{r} \cdot(\bar{i}+\bar{j}-\bar{k})=7$ are two planes and $(16,-9,0)$ is a point common to both the planes then the vector equation of the line of intersection of the planes is $\bar{r}=$
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The correct answer is:
$(16-7 \lambda) \bar{i}+(6 \lambda-9) \bar{j}-\lambda \bar{k}$
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