The term "y₂" typically refers to the second y-coordinate in a two-dimensional coordinate system. In mathematics, coordinates are used to specify the position of a point on a graph, where the first value represents the x-coordinate and the second value, y₂, represents the y-coordinate. This system is essential for graphing equations and visualizing relationships between variables. In the context of functions, y₂ can represent the output of a function for a specific input. For example, in the equation of a line, y = mx + b, y₂ would be the value of y when a particular x-value is substituted. Understanding y₂ is crucial for analyzing data and solving mathematical problems.