Question

If 4a² + 3b(4a + 3b) − c² = 0, then the family of straight lines ax + by + c = 0 are concurrent at the point 

(1) (− 2, 0) 

(2) (2, − 3) 

(3) (2, 3) 

(4) (3, 1)

Answer 1

Correct option (3) (2, 3)

Explanation:

⇒ the family of lines ax + by − c = 0 are concurrent at (2, 3) and the family of lines ax + by + c = 0 are concurrent at the point (− 2, − 3)