Geometry, Page 203, #2, 3rd edition

[yue]

The current answer for questions #2 says the answer is (C). But the explanation on page 211 says "Therefore, y must be an integer between 1 and 5, inclusive." Which should also include answer (B) as well, which is 3.

[tommywallach]

Hey Yue,

B is -3, at least according to my book. Is there a typo on yours, or did you simply misread it?

-t

[yue]

I did not misread. Must be a typo? Does anyone else have this typo?

The answer listed are:
(A) 0
(B) 3
(C) 5
(D) 7
(E) It cannot be determined from the information given.

[tommywallach]

Hey Yue,

I think you misinterpreted the question (I thought you were talking about a different one). This question is asking "how many possible values are there" not "Which is a possible value." R can have an x value of anything from 1 to 5 inclusive, which means there are 5 possible values: 1, 2, 3, 4, and 5. So the answer is C: 5.

Hope that helps!

-t