Final answer:
The number of pixels in a matrix is most closely related to the pixel matrix size.
Step-by-step explanation:
The number of pixels that are found in a matrix is most closely related to the pixel matrix size. The pixel matrix size refers to the dimensions of the matrix, which is a rectangular grid of pixels. The higher the pixel matrix size, the more pixels there are in the matrix.
For example, a 4x4 matrix has a total of 16 pixels, while a 6x6 matrix has a total of 36 pixels. So, the pixel matrix size directly determines the number of pixels in a matrix