Computer graphics uses matrices to transform the points, but there isn't much else about it that uses linear algebra. 2D rasterization cleverly iterates over pi

Computer graphics uses matrices to transform the points, but there isn't much else about it that uses linear algebra. 2D rasterization cleverly iterates over pixels. 3D rasterization does the same for triangles. The other parts of 3D are writing shaders (these days, usually modelling real-world materials), and rendering to textures for effects like reflections and shadows. Even though a main application of linear algebra is computer graphics, computer graphics uses very little linear algebra; the matrix part of your code is pretty small.