Circle And System Of Circles Question 126
Question: Circle $ x^{2}+y^{2}+6y=0 $ touches
Options:
A) y-axis at the origin
B) x-axis at the origin
C) x-axis at the point (3, 0)
D) The line $ y+3=0 $
Show Answer
Answer:
Correct Answer: B
Solution:
Centre is (0,-3) and $ R=\sqrt{0^{2}+9+0}=3 $ .