Question
Question: The circum-center of the triangle formed by the lines xy + 2x + 2y + 4 = 0 and x + y + 2 = 0 is –...
The circum-center of the triangle formed by the lines
xy + 2x + 2y + 4 = 0 and x + y + 2 = 0 is –
A
(–2, –2)
B
(0, 0)
C
(–1, –2)
D
(–1, –1)
Answer
(–1, –1)
Explanation
Solution
x(y + 2) + 2( y + 2) = 0 Ž x = –2, y = –2
Circumcentre of DOAB is mid point of AB
ŗ (–1, –1)
