What is the slope of a line that rises 2 units for every 1 unit it runs?

The slope of a line is defined as the ratio of the change in vertical position (rise) to the change in horizontal position (run). In this case, the line rises 2 units (the vertical change) for every 1 unit it runs (the horizontal change). To find the slope, you can use the formula:

[ \text{slope} = \frac{\text{rise}}{\text{run}} = \frac{2 \text{ units}}{1 \text{ unit}} = 2. ]

Therefore, the slope of the line is 2, which indicates that for every single unit moved to the right, the line moves up 2 units. This means the line is relatively steep, reflecting a significant rise compared to the horizontal run. This is why the correct answer is 2; it accurately represents the relationship between the rise and the run.