This is what my lecturer told me in the coursework:We only consider 4*4 matrices. These are used to rotate, scale or translate objects (or any combination of these operations). Matrices are also used later in the implementation of the virtual camera model. If you do not know the difference between a vector transformation and point transformation, look it up. I can't seem to find an answer and made an account for this website just for this question.
What is the difference between a point transformation and a vector transformation?
vectors