Final answer:
The sign of the slope indicates the direction and steepness of a line on a graph.
Step-by-step explanation:
The sign of the slope, whether positive or negative, provides information about the direction and steepness of a line on a graph.
A positive slope indicates that the line moves upward as the x-values increase, while a negative slope indicates that the line moves downward as the x-values increase.
For example, if we have a positive slope of 2, the line will rise 2 units on the y-axis for every 1 unit increase on the x-axis. In contrast, a negative slope of -2 means the line will descend 2 units on the y-axis for every 1 unit increase on the x-axis.