To accurately choose an answer, I would need information about the slopes of Line W and Line X as well as their orientations (whether they are increasing or decreasing). However, based on the options provided, the best fit would depend on whether Line W has a positive slope and Line X has a negative slope, or vice versa, and whether the change involves a factor of 3.
If Line W starts with a positive slope and transitions to Line X with a negative slope and this change is indeed by a factor of 3, then the first option would be correct:
"There is a slope change from positive to negative and by a factor of 3."
If the slopes are different but not by a factor, then the third option would apply.
If you can confirm or describe the specifics about the slopes and their direction, I can provide a more precise answer.