Trong mặt phẳng Oxy, cho A(2; 4) và B (4; -1). Khi đó, tọa độ của
là
A.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2018012160538477677/obj2018012160538477677232996_images/obj2018012160538477677232996_img1.png)
B.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2018012160538477677/obj2018012160538477677548999_images/obj2018012160538477677548999_img1.png)
C.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2018012160538477677/obj2018012160538477677865001_images/obj2018012160538477677865001_img1.png)
D.
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2018012160538477677/obj2018012160538477677437556_images/obj2018012160538477677437556_img1.png)
Đáp án và lời giải
Đáp án:D
Lời giải:
![img1](https://cungthi.online/upload/questionbank3_20201220/eduquestion/2018012160538477677/obj2018012160538477677800081_images/obj2018012160538477677800081_img1.png)