I think for |3x-14|, if x is subbed in, the value is positive but if 5 is subbed into 14-3x, then the value becomes negative.
I think it makes sense if subbing 4, in both cases the value is positive. I think this is why I am getting confused. I am to use values greater then 4. How do you treat these cases? Sub with the actual limit, even though it wouldn't work with other numbers?