Question Detail
Question
If a circle's general equation is x² + y² + 2gx + 2fy + c = 0 and (x₁,y₁) lies on it, then:
Correct Answer
Option A is the correct answer.
Detailed Explanation
If a point lies on a circle, its coordinates satisfy the circle equation, so x₁² + y₁² + 2gx₁ + 2fy₁ + c = 0.
Hint
The notes indicate answer A.