D
3 Answers
Aditya Agarwal
·2014-03-20 11:09:18
D.
m = -f/(u-f)
or m.(u-f) = -f
(u-f)<0 but since u-f is the dist. and it cannot be negative,
therefore, m|u-f| = |f|
(xy = c)
→ corresponding graph is D