Final answer:
The question deals with determining the characteristics of lines such as their slopes and relationships to each other by using pairs of points.
Step-by-step explanation:
The student is questioning about the properties of lines based on points given for each line. By examining the coordinates of two points on each line, we can determine various characteristics such as the slope, whether lines are parallel, perpendicular, or have any other specific relation to one another. It's important to know this to understand concepts of linear equations, which are foundational in algebra and coordinate geometry.