QUESTION 7 A linear transformationis A function f that satisfies f(ai + by -af) bf) OThe most common type of function O A function that maps lines to lines, but does not map the origin to itself A type of translation function QUESTION 8 Matrices are related to linear transformations in that Linear transformations are exactly the set of functions that can be represented by multiplying a vector by a matrix Linear transformations are the set of functions that act on matrices Matrices are the domain of linear transformations Linear transformations can be represented as vectors which act on matrices O QUESTION 9 The identity matrix is O The unique matrix 1 such that lx-x for all The only matrix which is tsown inverse O The only matrix that represents an affine transformation rather than a linear transformation Another name for the inverse of a given matrix