Is x<y?
1) x-y<-4
2) -2x>-2y
What's the best way to determine whether statement 1 is sufficient?
OA D
1) x-y<-4
2) -2x>-2y
What's the best way to determine whether statement 1 is sufficient?
OA D
1) x - y < -4lheiannie07 wrote:Is x<y?
1) x-y<-4
2) -2x>-2y
What's the best way to determine whether statement 1 is sufficient?
OA D
=> x + 4 < y
We see that x after an increase of 4, is less than y, thus, it must be less than y. Sufficient.
2) -2x > -2y
=> -x > -y; cancelling 2
=> x < y; multiplying the inequality by '-'. Note the sign reversal.
Sufficient.
The correct answer: D
Hope this helps!
-Jay
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