Co-ordinate Geometry

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Source: — Data Sufficiency |

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by ymach3 » Fri Aug 20, 2010 2:27 am
(i) negative slope-- two possibilities--- Line can be in Q 2 or Q4 i.e ( -a,+b) or (+a,-b)-- not a definite answer-INSUFF

(ii) a<b- can have many possible points.- INSUFF

When combined,

we have (-a,+b) satisfying both conditions. .

b is not Negative.

SUFFICIENT to answer.

C

Let me know if i did a blunder...