jainrahul1985 wrote:I could not understand/solve statement 2 . Please suggest
the idea is this:
* the left-hand side is an absolute value, which must be either 0 or positive.
* the right-hand side is (-y) where y is 0 or positive, so it must be 0 or negative.
therefore, the only way for the inequality to be true is for both sides to be 0.
hence, x = 3 and y = 0.
this is the only possibility, so, sufficient.
if you still don't get this, try plugging in *other* values of y -- you'll quickly see why none of them will work except y = 0.
Ron has been teaching various standardized tests for 20 years.
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