已知平面内两点A(8,﹣6),A(2,2).
(Ⅰ)求AB的中垂线方程;
(Ⅱ)求过P(2,﹣3)点且与直线AB平行的直线l的方程.
He likes playing tricks on others, but _________, he is a good boy. He is willing to help others.