Arectangle has vertices at these coordinates. (2, −2), (2, 5), (−1, 5) what are the coordinates of the fourth vertex of the rectangle? enter the coordinates in the boxes.

-1, -2. 
the coordinates must line up to form a rectangle. so since there are already two coordinates with 2 as their x there must be another coordinate with -1 so the rectangle can have a straight side parallel to the other. and the length of the side must be equal so it has to have the same y coordinate as the other coordinate on wit -1 as their x
 

Add up all the sides

The right answer should be 6 but your not very specific