# Basic information about matrices

Matrices organizes information such as variables and constants and stores them in rows and columns, they are usually named C. Each position in a matrix is called an element.

**Example**

This matrix

$$C=\begin{bmatrix} 1 & 2\\ 3 & 4 \end{bmatrix}$$

is made out of two rows and two columns. The element 4 is in row 2 and column 2.

It is common to name a matrix after its dimensions, a matrix named C_{m*k} has m rows and k columns.

**Video lesson**

Find the number of columns and rows in the following matrices

$$C=\begin{bmatrix} 1 &0 &4 \end{bmatrix}$$