Question

Equation of the diameter of the circle x² + y² – 6x + 2y = 0 which passes through the origin is –

• A. x + 3y = 0
• B. x – 3y = 0
• C. 3x + y = 0
• D. 3x – y = 0

Answer 1

Answer: (A)

x + 3y = 0

Answer 2

Diameter ¼O;kl½ y = mx

passes through centre (3, –1)

Ž – 1 = 3m Ž m = $- \frac { 1 } { 3 }$

Equation y =