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gmatprep - x-y plane

by Gurpinder » Mon Sep 20, 2010 12:42 pm
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so the takeaway for this question is that, we can plugin #s for a and b and regardless of the length of the line, the midpoint is going to be the same? right?

[spoiler]So (C) should be the correct answer?[/spoiler]
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
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by sumit.sinha » Mon Sep 20, 2010 2:27 pm
Gurpinder wrote:Image


so the takeaway for this question is that, we can plugin #s for a and b and regardless of the length of the line, the midpoint is going to be the same? right?

[spoiler]So (C) should be the correct answer?[/spoiler]
The midpoint between two points A(x1,y1) and B(x2,y2) is ( (x1+x2)/2, (y1+y2)/2 )

Here midpoint is (1/2,1/2)
Cheers,
Sumit
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by Gurpinder » Mon Sep 20, 2010 2:36 pm
so is my takeaway right?

since the line is going to at an exact place but just the length of it going to vary depending on a and b proportionally, the midpoint will always be the same?
"Do not confuse motion and progress. A rocking horse keeps moving but does not make any progress."
- Alfred A. Montapert, Philosopher.
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