Comments:Slope Tool
From GeoGebra Manual
Position of the slope triangle
For a line defined by points A and B (in this order) using Line Tool or Line Command, the slope triangle is placed to point A. For line l defined using input line (entered as equation, e.g. l:x+2y=3), the triangle is placed at the y-intercept (point on l with zero x-coordinate).
If you want to place the triangle elsewhere, you can follow these instructions.
1 select Line Tool, click the line l in two points to create points C and D; new line will be created at the same time
2 use Slope Tool on the newly created line
3 hide point D
4 move C to adjust position of the slope triangle
