Quiz 1	1.2 mxn matrix upper/lower triangular matrix vector components leading/free variables elementary row operations	1.3 consistent system inconsistent system rank linear combination
Quiz 2	2.1 domain codomain linear transformation	2.2 scaling dilation contraction	2.3 invertible function invertible matrix determinant of a   2x2 matrix
Quiz 3	3.1 image of a function span kernel of a linear transformation	3.2 subspace of real n-space redundant vectors linearly independent vectors basis
Quiz 4	3.3 dimension nullity	3.4 B-coordinates B-coordinate vector B-matrix of a linear transformation similar matrices
Quiz 5	4.1 span linearly independent basis B-coordinate vector B-coordinate transformation	4.2 linear transformation image kernel rank nullity isomorphism
Quiz 6	5.1 orthogonal vectors length unit vector orthonormal orthogonal complement angle between two vectors correlation coefficient	5.3 orthogonal linear transformation