Question

The midpoint of ab is m(-2,1). if the coordinates of a are (1,-2) what are the coordinates of b​

Answer 1

-5,4

Explanation:

midpoint x is a 3 point difference. 3 points in the opposite direction is -5

midpoint y is also a 3 point difference. 3 points in the opposite direction of that is 4

so I believe the correct answer should be (-5,4)