4) Consider three linearly independent vectors 1. 2, 3 in R4. Find Tref 1 2 5) Express the plane V in R³ with equation 3x1 + 4x2 + 5x3 = 0 as the kernel of a matrix A and as the image of a matrix B. 6) find the reduced row-echelon form of the given matrix A Then find a basis of the image and a basis of the kernel (1) [13 A= 4 5 8 9 (2) 4 8 1 1 6 3 6 12 5 A= 2 4 19 10 1 2 3 2 0 7 6 3 7) For which value(s) of the constant k do the vectors below form a basis of R4? 1 0 0 3 234 4