Circle And System Of Circles Question 149

Question: Which of the following line is a diameter of the circle $ x^{2}+y^{2}-6x-8y-9=0 $

Options:

A) $ 3x-4y=0 $

B) $ 4x-3y=9 $

C) $ x+y=7 $

D) $ x-y=1 $

Show Answer

Answer:

Correct Answer: C

Solution:

Centre (3, 4) is satisfying only $ x+y=7 $ .