Given:
Slope of the line = 1
Let's interpret the slope in terms of rise and run.
Apply the slope formula:

The slope of a line can be said to be the rise divided by the run.
Here, since the slope of the line is 1, we have:

This means that the graph rises 1 unit for each 1 unit of run.
ANSWER:
The graph rises 1 unit for each 1 unit of run.