When you set driven keys, the curve created in the Graph Editor shows the relationship between the linked attributes.
For each attribute value of the driver, the curve shows the associated value of the driven attribute. You can edit the curve to alter the relationship.
To view driven key associations in the Graph Editor
The curve in the Graph Editor shows the relationship between the values of the driven and driver objects. The column of numbers on the left lists the driven attribute values, and the row at the bottom lists driver attribute values.