If xy≠0, is |x|>|y|？
1) x=-2y
2) x=y^4
=>
Condition 1)
|x| = |-2y| = 2|y| > |y|.
Thus this is sufficient.
Condition 2)
If y = 2, then x = 16 and so |x| > |y|.
If y = ½, then x = 1/16 and so |x| < |y|.
This is not sufficient.
Ans: A
1) x=-2y
2) x=y^4
=>
Condition 1)
|x| = |-2y| = 2|y| > |y|.
Thus this is sufficient.
Condition 2)
If y = 2, then x = 16 and so |x| > |y|.
If y = ½, then x = 1/16 and so |x| < |y|.
This is not sufficient.
Ans: A
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