In the plane rectangular coordinate system, the coordinates of the end point of the line AB are a (- 2,4), B (4,2), and the line y = kx-2 always has an intersection with the line. The value range of K is calculated After taking the endpoint coordinates in, we can calculate k = 1 and K = - 3. Why should it be greater than or equal to 1 and less than or equal to - 3

In the plane rectangular coordinate system, the coordinates of the end point of the line AB are a (- 2,4), B (4,2), and the line y = kx-2 always has an intersection with the line. The value range of K is calculated After taking the endpoint coordinates in, we can calculate k = 1 and K = - 3. Why should it be greater than or equal to 1 and less than or equal to - 3

The greater the absolute value of the K value of the line, the closer the line is to the Y axis. So when you draw the image, you will find that they are around the Y axis, so their right part can only be greater than or equal to 1, and their left part can only be less than or equal to - 3