Chapter 1 - Tools of Geometry - 1-3 Measuring Segments - Practice and Problem-Solving Exercises - Page 24: 23

They are congruent (both segments are 4 units long)

To find the length of a segment, find the positive difference of the two points. For XY, we have $|-7-(-3)|=|-7+3|=|-4|=4$ For ZW, we have $|1-5|=|-4|=4$ They are congruent.