1. Form 4 (matrices vs. vector) In matrices, two or more matrices can be subtract or add if they are in the same order. Any matrices, can be multiply with any of constant.

2. A vector can be represent in term of unit vector as or in which and are known as the horizontal component and the vertical component respectively. Example: Let and . Same like addition of matrices. We can add when they are in same order.

3. How its relate? In vector can also represent as: In matrices, also called as column matrices. Two matrices can be add or subtract when there are in same order.