Matrices and Linear Functions Are Synonymous?

All linear functions can be represented, as you said, as matrices. So that was basically the idea that i was getting at, that ya functions can still go through a linear transformation. There is this magical thing called a scaler product, a caedat product. We just kind of take it for granted. But when you take a dog product, it's equal to the length of both vectors multiplied by each other times the co sign of angle between those. That's what thats what of dog product?