Christopher was asked to solve the problem shown.
Problem:
Triangle RST has vertices R(10, 0),
S(3, 4) and T(4, 2). What is the
resulting image of S' after a
vertical translation two units down
and a horizontal translation four
units to the right?
What mistake did Christopher make?
Christopher's Work:
(x - 2, y + 4)
S (3, 4)
S' (3-2, 4+4)
S' (1,8)