What is "if f (x) = one-ninth x minus 2?

The function f(x) = 1/9x - 2 is a linear function with a slope of 1/9 and a y-intercept of -2. This means that for every 9 units the input x increases, the output of f(x) will increase by 1 unit. The function represents a straight line on a graph with a negative slope and a y-intercept at point (0, -2).

This function can be used to represent relationships between two variables where one variable changes at a constant rate relative to the other. It can be used in various fields such as economics, physics, and engineering to model linear relationships between different quantities.