AABC, with vertices at A(0,0), B(3, 2) and C(1, -1), is mapped onto AA'B'C' at A'(0,0),
B'(6,4) and C(2,-2). The following solution is
incorrect. Select the line(s) where an error occurs.
I.
Select any pair of corresponding points,
say B and B.
II. Divide coordinates of B by corresponding
coordinates of B'.
III. 3-6 = { = 1, 2 - 4 = į = }.
IV. Therefore the scale factor is į.