gmat prep <coordinate geometry>

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gmat prep <coordinate geometry>

by vaishalijain7 » Tue Jun 30, 2009 1:41 pm
can anyone please explain how to solve this ques?
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by ssmiles08 » Tue Jun 30, 2009 5:43 pm
1) tells us like k has the equation of x = 1. Like k is a straight vertical line. However, this tells us nothing about m. only 1 point of m is given (1,-1) and we can not find the slope. INSUFF

2) This statement just reaffirms the first statement by stating the like k is a vertical line. This gives us no information about m either. INSUFF

together, no info about m, so INSUFF.

(E)