1. The problem statement, all variables and given/known dataWe have a linear transformation: T(x,y)=(x-2y,y,3x+4y). Determine whether T is invertible. 2. Relevant equations 3. The attempt at a solution the basis of the image is (1,0,3) and (-2,1,4). I really have no clue how to proceed from here. I mean i can't even write (1,0) and (0,1) as an linear combination of the image vectors since they dont have the same dimension.