What is a Matrix?
A rectangular grid of values.
What are Dimensions?
How many rows and columns are in a Matrix.
What is Address?
The location of an entry in a matrix.
What makes Matrices compatible for addition or subtraction?
Whether they have the same dimensions or not.
What is a Scalar?
A number that you can multiply a matrix by.
What is a Scalar Product?
The product of a scalar and a matrix.