The ratio in which the line joining (2,4,5) and (3,5,-9) is divided by the yz-plane is a. 2:3            b. 3:2             c. -2:3           d. 4:3

Explanation

To find the ratio in which the line joining the points \( A(2, 4, 5) \) and \( B(3, 5, -9) \) is divided by the YZ-plane, we follow these steps:

### Step 1: Understand the YZ-plane
The YZ-plane is defined by the equation \( x = 0 \). This means that any point on the YZ-plane will have its x-coordinate equal to zero.

### Step 2: Set up the coordinates
Let the point where the line segment joining \( A \) and \( B \) intersects the YZ-plane be \( P(0, y, z) \). We need to find the ratio in which the point \( P \) divides the segment \( AB \).

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