General Mathematics · Unit 2 · Matrices · Matrices and matrix arithmetic

Use matrices for storing and displaying information that can be presented in rows and columns, e.g. tables, databases, links in social or road networks.

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Question 1

A community centre records which of its five rooms (Art room, Boardroom, Computer lab, Dance studio, Equipment store) are accessible from each other by internal doors. The table shows the direct access between rooms. Which matrix correctly represents this information?

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Perform matrix multiplication manually up to 3 × 3 matrices but not limited to square matrices.

Use matrices, including matrix products and powers of matrices, to model and solve problems, e.g. costing or pricing problems, squaring a matrix to determine the number of ways pairs of people in a communication network can communicate with each other via a third person.

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