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Which of the following is / are true ? ...

Which of the following is / are true ?
If |x+y|=|x|+|y| then points (x,y) lie in 1st or 3rd quadrant or any of the x-axis of y axis
If `|x+y| lt |x|+|y|` then points (x,y) lie in 2nd or 4th quadrant.
(c ) If |x-y|=|x|+|y| then points (x,y) lie in 2nd or 4th quadrant.

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Which of the following is / are true ? (a) If |x+y|=|x|+|y| then points (x,y) lie in 1st or 3rd quadrant or any of the x-axis or y axis (b) If |x+y| lt |x|+|y| then points (x,y) lie in 2nd or 4th quadrant. (c ) If |x-y|=|x|+|y| then points (x,y) lie in 2nd or 4th quadrant.

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