A, bring this point in, that is, let x=- 1, and calculate that y should be 4, so it is (-1, 4).

B. As can be seen from the figure, the coordinate area is the first quadrant, the second quadrant, the third quadrant and the fourth quadrant counterclockwise from the upper right corner, so it is correct.

C, as can be seen from the figure, when x> is at 1, the image is below the X axis (that is, the Y axis).

D, as can be seen from the image, y decreases with the increase of x.

So both BC's are correct.