Answer:
Dilation of 2 about the origin
Explanation:
2 x -1 is -2, and 2 x 0 is equal to 0. 1 x 2 is 2 and 1 x 2 is 2. 2 x 2 is 4 and -1 x 2 is -2. You are looking at the starting numbers and the final numbers and figuring out what it took for those numbers it get there. It's similar to factoring.