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cordinate geo

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by logitech » Wed Jan 07, 2009 12:31 am
since it is a positive slope it will be at -y and area = 4x6/2=12 SO, the answer is -6
LGTCH
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by vittalgmat » Wed Jan 07, 2009 3:00 am
Important concepts to remember are pictures for +ve slope, -ve slope, slope =0 and Indeterminate slope. Then depending the coordinates of x and/or intercepts the picture can be refined to fit exactly.

Drawing a picture was very helpful. Also on the GMAT, the writing pad that they give has these fine grids, which makes it easier to draw such pictures.

I did these to get my coord geo concepts right.

HT helps
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