Let the vector system u={(1,2,7);(0,-1,1-3); (2,3,3+1); (1,0.2-3)} a. Find the number of dimensions and a basis W of the subspace generated by the vector system II.

b. Find the parameter k so that u =(23k+1) is a linear combination of W. and deduce uw

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36