Final answer:
The slope of a line is a measure of how steep it is, and it can be calculated by finding the change in the y-coordinates divided by the change in the x-coordinates. In the given example, the slope of the line is 3, meaning that for every increase of 1 on the horizontal axis, there is a rise of 3 on the vertical axis.
Step-by-step explanation:
The slope of a line is a measure of how steep it is. It is calculated by finding the change in the y-coordinates (vertical axis) divided by the change in the x-coordinates (horizontal axis) between two points on the line.
In the given example, the slope of the line is 3. This means that for every increase of 1 on the horizontal axis, there is a rise of 3 on the vertical axis. The slope remains the same along the entire line.