JEE Main · 2024 · 30 Jan 2024 · Shift 2 · Straight Lines

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If is the locus of a point, which moves such that it is always equidistant from the lines and , then the value of equals
  1. (A)14✓ Correct
  2. (B)6
  3. (C)8
  4. (D)29

Answer: (A)

Solution

A point equidistant from and satisfies
.

Taking the sign: .
Taking the sign: .

The full locus is the pair of lines . Expanding:
.

Dividing by 3 to match the given form :
.

So , , , .

.

JEE Main · 2024 · 30 Jan 2024 · Shift 2 · Single correct option

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