buoyant wrote:Mitch,
in each statement even though case 1 doesn't hold good, how do we know that case 2 will apply. the information may be insufficient right?
The prompt indicates that |x+2| = |y+2|.
This equation REQUIRES that Case 1 be true (x=y) or that Case 2 be true (x+y = -4).
Thus, if x≠y, then Case 2 must be true, implying that x+y = -4.
Since each statement indicates that x≠y, we know in each statement that x+y = -4.
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