Section C Answer three of the following four questions. All questions carry ten marks. 1. Write the following system of equations as a matrix equation and solve it using either an inverse or by using Cramer's rule. 1 + 8 = 2y + z, I = 52 + 13, >+ y+1=0. Some of the cofactors of the matrix A are shown here. -12 1 5 5 1 A = 3 0 -5 C= 1 0 10 -4 2. Find the eigenvalues of the matrix given here: 3 4 4 6 1