if δxyz is dilated by a scale factor of 3 about point y, which of the following is true about a line a prime y prime?

triangle xyz is shown with line ya running vertically through the center of the figure.

line a prime y prime is perpendicular to line ay.
line a prime y prime is parallel to line ay.
line a prime y prime passes through the center of dilation.
line a prime y prime intersects with point x′.