1. In each case explain why f : E2 E2 is not an isometry. (a) f(x, y) = (x, 43xy). (1pt) (b) f(x, y) = (x + 19y, x 19y)

1. In each case explain why f : E2 -> E2 is not an isometry. (a f(x, y) = (x, 43xy). bsite. 30 (b) f(x, y) = (2+ 19y, x - 19y) Justification: materials to any