The Production Function illustrates the relationship between the inputs (factors of production) and the output produced. It shows how much output can be generated by using a specific quantity of inputs, such as labor, capital, and raw materials. The function reflects the efficiency of input usage and helps businesses determine optimal input combinations. It is crucial in understanding how changing the quantity of inputs influences production levels. The production function typically demonstrates diminishing marginal returns as more of an input is added, assuming other factors are constant.