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help wtih these DS problems please

Expert replies
by xcise_science » Sat Dec 01, 2007 4:32 pm
Thanks

For Q8,
My translation of stmt 1: 10(d) is a factor of 30!
==>so then wouldn't that give me the value for D?
correct answer is C

Image

Q9,
stmt 1: if both x-intercepts are (+), then wouldn't the slopes have the same sign?

Image
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Source: — Data Sufficiency |

by syv11 » Sat Dec 01, 2007 5:16 pm
For Q8,

Statement 1 alone does not tell you enough; d could be 1, 2, 3 etc
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by syv11 » Sat Dec 01, 2007 5:20 pm
Q9

(1) positive x intercept could mean one line has positive y, the other negative -- not enough

(2) enough; negative y and positive point (4,3) means both have a positive slope

B

Is B the correct answer? Please confirm
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by xcise_science » Sat Dec 01, 2007 5:25 pm
No, the answer to Q9 is C.
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by syv11 » Sat Dec 01, 2007 5:33 pm
Sorry, did not read that it said product; then it is C
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