ABSTRACT
This chapter discusses the concept of matrix, which is very useful in business as it helps to represent information displayed in a table. Matrix also helps in solving systems of two or more linear equations. The chapter shows that the application of a matrix in the business world. Input-output analysis is a basic method of quantitative economics that portrays macroeconomic activity as a system of interrelated goods and services. In particular, the technique observes various economic sectors as a series of inputs of source materials (or services) and outputs of finished or semi-finished goods (or services). A matrix is not only a convenient shorthand for describing information, but has also lots of computational advantages. A matrix is a rectangular array of numbers. A matrix consisting of n rows and m columns is called an n × m matrix.
