If the points `A(3,2,-4),\ B(9,8,-10)a n d\ C(5,4,-6)` are collinear, find the ratio in which C divides AB.

Explanation

To find the ratio in which point C divides the line segment AB, we can use the section formula in 3D coordinate geometry. The points given are:

- A(3, 2, -4)
- B(9, 8, -10)
- C(5, 4, -6)

### Step 1: Set up the section formula
The section formula states that if a point C divides the line segment AB in the ratio \( m:n \), then the coordinates of C can be expressed as:
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