Question

The perpendicular distance between the lines given by \( (x - 2y + 1)^2 + \text{k(x - 2y + 1) = 0 \) is \( \sqrt{5} \), then k =}

• A. 5
• B. 2
• C. 4
• D. 6

Hint:

Equations of the form \( f(x,y)^2 + k \cdot f(x,y) = 0 \) always represent two parallel lines.

Answer 1

The Correct Option is A