When line AB is enlarged by a scale factor of 3 with the center of dilation at the origin, every point on line AB moves away from the origin and becomes three times farther away while keeping the same direction. This creates a new line, A'B', that is parallel to the original line AB and does not go through the origin.
If we increase the scale factor to 13, the points on line AB will move even farther away, becoming thirteen times their original distance from the origin, while still remaining parallel. In both cases, the direction of the line stays the same, but the distance from the origin increases with a larger scale factor.