Intro to 3D graphics week 2 Matrices

Matrices are a useful way of presenting data in a neat tabular form. A matrix is a rectangular array of numbers with each element being a number of the array. n rows and m columns
A = 1,2,3
4,5,6
7,8,9
Adding two matrices together
3,-2,5         7,8,4    =    3+7,-2+8,5+4    =     10,6,9
1,3,4     [...]