What is "line ab contains points a(4?

This statement means that line AB is a line in a mathematical plane or space that passes through two points, whose coordinates are specified as point A(4, -1) and point B(2, 6). The line contains all points that lie between these two points A and B. Lines in mathematics can stretch infinitely in both directions, and all points on the line can be described by a linear equation in the form y = mx + b.