ds1
This topic has expert replies
- Morgoth
- Master | Next Rank: 500 Posts
- Posts: 316
- Joined: Mon Sep 22, 2008 12:04 am
- Thanked: 36 times
- Followed by:1 members
Statement (1)
slope of line k is negative.
Since the line passes through the origin, the line will be drawn from bottom right to top left, therefore b can be positive if a,b lies in the second quadrant, b could also be negative if a,b lies in the fourth quadrant. Insufficient.
Statement (2)
a<b, same reasoning as above. Insufficient.
Combining (1) & (2)
we know in second quadrant a<b, slope is negative, therefore b is positive. Sufficient.
Thus, C.
OA?
slope of line k is negative.
Since the line passes through the origin, the line will be drawn from bottom right to top left, therefore b can be positive if a,b lies in the second quadrant, b could also be negative if a,b lies in the fourth quadrant. Insufficient.
Statement (2)
a<b, same reasoning as above. Insufficient.
Combining (1) & (2)
we know in second quadrant a<b, slope is negative, therefore b is positive. Sufficient.
Thus, C.
OA?