Question

If a circle touches the lines $3x - 4y - 10 = 0$ and $3x - 4y + 30 = 0$ and its centre lies on the line $x + 2y = 0$ then the equation of the equation of the circle is

• A. $x^2 + y^2 + 4x - 2y - 11 = 0$
• B. $x^2 + y^2 + 2x - 4y - 11 = 0$
• C. $x^2 + y^2 * 4x + 2y - 11 = 0$
• D. $x^2 + y^2 + 2x - y - 11 = 0$

Answer 1

Answer: (A)

$x^2 + y^2 + 4x - 2y - 11 = 0$

Answer 2

Answer (a) $x^2 + y^2 + 4x - 2y - 11 = 0$