Coordinate geometry

jim · Posted: Wed Oct 03, 2007 1:41 pm Post subject: Coordinate geometry

S & T are two differnet numbers on the number lin.Is S+T equals to zero??

A-- The distance between S & 0 is the same as the distance between T & 0

B-- 0 is between S & T..

ANY EXPLANATION ..

davidnodine · Posted: Wed Oct 03, 2007 2:29 pm Post subject:

I think the answer is A.

I. S&T are two different numbers so the only way that they could have the same distance to Zero is if -S=T so the sum will always be zero for any number

II. S&T could be -4&4 which would sum to zero or they could be -1, 5 with a sum of 4, insufficient

Guest · Posted: Wed Oct 03, 2007 9:33 pm Post subject:

u got it.........