题目

(locate) in the central district, the hotel offers the best service with the lowest price. 答案：【1】Located△POA、△QAB都是等边三角形，点P、Q都在双曲线y=kx（k＞0，x＞0）上，点A、B都在x轴上，OA=2．（1）双曲线的解析式为 ；（2）求点B的坐标．