Find the equation of the line that is the image set of the flattening
$$f(x,y)=(3x-3y, x-y).$$
Could somebody tell me where I need to start as haven't got a clue?
Find the equation of the line that is the image set of the flattening
$$f(x,y)=(3x-3y, x-y).$$
Could somebody tell me where I need to start as haven't got a clue?