Slope is a mathematical concept that represents the ratio of the change in y-coordinates to the change in x-coordinates on a graph. It is a critical component in understanding linear relationships, as it defines the steepness and direction of a line. For example, the formula for slope can be expressed as \(\frac{y}{x} = \frac{-3}{2}\), indicating a negative slope. This resource also includes a practical exercise to check understanding by asking what the slope is when the change in y is 4 and the change in x is 2, and also prompts students to interpret the slope of a specific graph.