How to solve the mathematical equation of grade three?

1) substitute y=m/x according to the coordinates of point a to find m =1;

Let y=ax and substitute it into point A to get the equation of straight line y=4x. When it is combined with y= 1/x, the intersection point is obtained, that is, point C. Let y=ax+b and substitute it into the coordinates of point A and point D to obtain the equation of straight line L.

2) Substitute equation L into the ordinate of point E to find point E;

3) The third one is BN, and a parallel line parallel to the Y axis is made through point A, which intersects BN at point F, with tanABN=AF/BF, and the other angle is the same as above.

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