A point (x,y)(x, y)(x,y) is transformed via x′=3xx' = 3xx′=3x and y′=3y+2y' = 3y+2y′=3y+2. Is this a linear transformation?
Yes, because it scales coordinates.
No, because the translation component +2+2+2 prevents it from being linear.
Yes, because it is an affine transformation.
No, because the scaling factor is not 1.