The ratio in which yz–plane divide

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Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Three-dimensional Geometry

Question:

The ratio in which yz–plane divides the line joining (2, 4, 5) and (3, 5, 7)

Options:

-2 : 3

2 : 3

3 : 2

-3 : 2

Correct Answer:

-2 : 3

Explanation:

Let the ratio be λ : 1

x-coordinate is $\frac{3 \lambda+2}{\lambda+1}=0 \Rightarrow \lambda=-2 / 3$

Hence (1) is the correct answer.