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If x = -|w|, which of the following must be true

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If x = -|w|, which of the following must be true  [#permalink]

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New post 17 Jul 2018, 19:01
Bunuel,
I couldn't understand OG explanation. Alternatively, if (x, w) is equal to either of the pairs (−1,1) or (−1,−1), then x = −|w| is true. However, each of the answer choices except x2 = w2 is false for at least one of these two pairs.

Could you explain me.

Thanks

adkikani , please try out this one
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Re: If x = -|w|, which of the following must be true  [#permalink]

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New post 17 Jul 2018, 19:08
1
Thanks ammuseeru , I think am better at single modulus ;)

My approach coincided with OptimusPrepJanielle
Did you care to took x or w as negatives or fractions even if nothing
was mentioned about them in questions stem?

I honestly at time have a disliking for OG sol since at time they are crappy (you may find tons
of issues on verbal forums), I would rather validate my approach
on forums than spending time to understand them.

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Re: If x = -|w|, which of the following must be true  [#permalink]

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New post 18 Dec 2018, 18:47
i just cannot seem to understand the rule of absolutes and always get these questions wrong. Just for absolutes, can someone recommend good studying source?
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Re: If x = -|w|, which of the following must be true  [#permalink]

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New post 18 Dec 2018, 21:16
anum23 wrote:
i just cannot seem to understand the rule of absolutes and always get these questions wrong. Just for absolutes, can someone recommend good studying source?


10. Absolute Value



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Re: If x = -|w|, which of the following must be true &nbs [#permalink] 18 Dec 2018, 21:16

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