d. y=-3
since this is a point and the line must be horizontal it is important to look at the y of the coordinate given. y=-3 then gives you the answer to your question since at x=3 the line would be vertical; at x=-3 the line would be going through quadrant two and three instead of quadrant one and four; and y=3 would be going through one and two instead of quadrant one and four.
