Answer:
see explanation
Step-by-step explanation:
Assuming the dilatation is centred at the origin.
Then multiply the coordinates of each point by the scale factor, that is
(- 2, 3 ) → (- 2(2), 3(2) ) → (- 4, 6 )
(3, 4 ) → (3(2), 4(2)) → (6, 8 )
(4, - 1 ) → (4(2), - 1(2)) → (8, - 2 )
