A is (2,5) and B is (-1,3).write out the slope of AB and the equation of the line AB.write out the equation of the line through B perpendicular to AB
问题描述：
A is (2,5) and B is (-1,3).write out the slope of AB and the equation of the line AB.write out the equation of the line through B perpendicular to AB
答
一个是（2,5）和B（－1，3）。写出AB的斜率和AB线方程写出来的线方程，通过B垂直于AB
答
问:A是,B是.写出直线AB斜率和方程.写出过B点与AB垂直的直线方程.
斜率=(5-3)/(2-(-1))=2/3
AB:y=2/3x+11/3
直线:y=-3/2x+3/2
鉴定完毕