Consider the following problem: Find all the values of k in increments of 0.5 for which the solution for y in the following system of equations has a magnitude greater than 4. 2x -y+z- k 3x +3y+9z 6 3x - 2y +5z -3 Select the methods below that would be appropriate to include in a solution to this problem. More than one method may be applicable. Select all that apply. Newton-Raphson iteration MATLAB roots function ? LU factorization MATLAB left division Gauss elimination MATLAB polyfit function Gauss quadrature Lagrange polynomials