In professional fields such as construction, facility management, and data analysis, understanding the geometric properties of lines is essential for accurate planning and reporting. Match each term related to the slope of a line with its correct mathematical or geometric definition.

In civil engineering, a surveyor is designing a drainage system where a secondary pipe must be installed perpendicular to a main line to ensure proper water flow. If the main line is modeled by a linear equation with a slope of $m$, which of the following expressions represents the slope that the perpendicular pipe must have?

In logistics and facility planning, if two transport corridors are modeled as linear equations on a coordinate grid and both corridors have a slope of ${}0.25$, these corridors are mathematically considered to be parallel.

In sales management, a linear model $y = mx + b$ is often used to project future revenue. Arrange the following steps in the correct order to graph a sales projection line using the slope and the y-intercept.

The Mathematical Formula for Slope