kskumar wrote:
avigutman can you explain the above question using a Number line?
kskumar We know that x lives somewhere inside this region:
--------(-2)
----------------------(7)------------
If it's helpful, you can insert 0 in the appropriate place, as well as any other numbers from the answer choices (-7 and 2).
It's important to note that the answer choices do not represent facts. The only fact here is the number line above. The answer choices are just questions.
Here's an analogy:
Fact: Avi is in Toronto
Which of the following must be true?
1) Avi is in Canada
2) Avi is in France
3) Avi is a doctor
Only 1 must be true. 2 is definitely false, and 3 may or may not be true.
Now, some might say how do you know 1 must be true? What if Avi is in Vancouver??
Well, the fact is that Avi is in Toronto, and the question is whether Avi is definitely in Canada. Not the other way around. So the direction of the logic is very important here.
If we apply that logic to the original question, using the number line, we should be able to answer it correctly.
Knowing that x lives somewhere inside that yellow range, yes, we can say definitively that x lives to the right of (-7).
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