by tommywallach Thu Mar 19, 2015 5:16 pm
Hey J,
It seems like the mistake you made was missing the "minimum" part. So you can't just "take" whatever comes out of the absolute values when you plug in something for x. You have to search out the MINIMUM it can be, and that's your column value. So actually, the question itself makes (D) impossible, because there can only be ONE minimum for A and ONE minimum for B. This means the answer must be A, B, or C. (It can only be (D) if one or both columns could have multiple values.)
-t