∴ A (-2,4), substitute x=b and y=-2 into y=-8 x to get b (4 4,4).

So the coordinates of A and B are: (-2,4), (4,2).

(1) According to the fact that the abscissa of point A and the ordinate of point B are both -2, substitute it into the inverse proportional function y=-8.

x

You can get the coordinates of a and B.

(2) Substitute the coordinates of point A and point B into the linear function y=kx+b, and the analytical formula can be obtained.