User's Manual Part 3

2) Position the mouse pointer at a point on the curve.
3) Press and hold the left mouse button.
4) Drag the pointer to the end of the desired slope line.
5) Release the left mouse button when the pointer is at the desired location. The
software will draw a slope line on the Data Graph, and label the slope value.
To obtain more accurate slopes:
1) On the Tools menu, click Magnify to magnify a portion of the Data Graph
2) Repeat the Slope command.