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slope of n and p (GMAT Prep)

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by alex.gellatly » Mon Jul 02, 2012 9:59 pm
Lines n and p lie in the xy-plane. Is the slope of line n less than the slope of line p?

1. Lines n and p intersect at point (5,1)
2. They y-intercept of line n is greater than the y-intercept of line p.
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Source: — Data Sufficiency |
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by tutorphd » Mon Jul 02, 2012 10:07 pm
Each statement by itself does not tell you anything about the relation of the slopes. Imagine it or sketch it.

Try the two statements together. Sketch the situation and you will see that if both lines pass through that point (5,1), greater y intercept means lower slope. So the relation of the slopes can be determined (n has grater intercept and lower slope than p).
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by Anurag@Gurome » Mon Jul 02, 2012 11:04 pm
For an algebraic approach >> https://www.beatthegmat.com/co-rodinate- ... tml#465029

For a conceptual approach >> https://www.beatthegmat.com/ds-line-t65647.html#294849
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