[填空题]
The coordinates of point A d:hn5l6xt*h2tbg ci h1tn:m- are (6,−3) and;5zxy0x a 3i4utapk*q the coordinates of point B are (−2,−1)auxi pqzk 5y;x0t4*a3. is the line which passes through A and B.
1.Find the equation of .
Point M is the midpoint of [AB]. The line is perpendicular to and passes through M. y = ax+b a = b =
2.Find the equation of. y = ax+b a = b =