please solve and number accordingly

5 - 2 Let A = Compute 612 - A and (612 )A. 6 - 4 612 - A= (Type an integer or decimal for each matrix element.) (612 )A = (Type an integer or decimal for each matrix element.)Use the given inverse of the coefficient matrix to solve the following system. 7x1 + 3X2 = 9 A-1 = - 6X1 - 3X2 = - 4 - 2 W V Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. OA. X1 = and X2 = (Simplify your answers.) O B. There is no solution.Determine if the specified linear transformation is (a) one-to-one and (b) onto. Justify each answer. T(X1,X2, X3) = (X1 - 7X2 + 2X3, X2 -9X3) (a) Is the linear transformation one-to-one? O A. T is not one-to-one because the columns of the standard matrix A are linearly dependent. O B. T is one-to-one because T(x) = 0 has only the trivial solution. O C. T is not one-to-one because the columns of the standard matrix A are linearly independent. O D. T is one-to-one because the column vectors are not scalar multiples of each other. (b) Is the linear transformation onto? O A. T is onto because the standard matrix A does not have a pivot position for every row. O B. T is not onto because the standard matrix A does not have a pivot position for every row. O C. T is not onto because the columns of the standard matrix A span R2. O D. T is onto because the columns of the standard matrix A span R2.Assume that T is a linear transformation. Find the standard matrix of T. T: R2>R2 is a vertical shear transformation that maps 91 into 91 - 2192 but leaves the vector 92 unchanged. A=D (Type an integer or simplied fraction for each matrix element.)