Hello everyone, i'm confused on this problem: It says: A linear transformation T:R^3->R^2 whose matrix is 2 -4 -3 -3 6 0+k is onto if k != ? != meaning, not equal. So my thinking was, For it to be a transformation into R^2, doesn't that mean k isn't suppose mean that the column -3 0+k has to some how come out to be 0 0 so your only left with 2 -4 -3 6 so that would be in R^2 right? i'm confused, am i thinking wrong? or is there some trick to easily find what k isn't suppose to be? Thanks!