Lines, Slopes, Intercepts, and Cars Directions:[br][br]Default Functions:[br]Refresh Button: To reset the applet, click the Refresh Button at the top-right corner.[br]Zoom In/Out: Using your scroll wheel, you can zoom in and zoom out of the applets visible area. The screen tends to re-center wherever the mouse cursor is located.[br]Move: Hold the Shift key and then click and hold your primary mouse button to pan around the visible area of the applet.[br]Movable Objects:[br]Car: Click and hold the red point that follows the path of the line.[br]Sliders: Adjust the values of the linear equation and the car size.