How to use this Vector Grapher:
1. Enter the points
2. You might have to zoom in or out to show the vector.
3. To zoom, first click on the grid and then turn the mouse wheel.
4. Press and hold the left mouse button to move the grid.
5. You can also left click on the black vector arrow and move the triangle as a single unit.
6. You can also click on either A or B and move just that ONE point and watch the values the boxes change.