Is this true or false a dilation is a function because every point on the pre-image corresponds to exactly one point on the image.

I believe that to be true

 A transformation that makes a figure similar to the original by making it proportionally smaller of larger. In a dilation, a shape is stretched or compressed proportionally from a point called the point of dilation. So it is True.

Which of the following values are in the range is the function graphed below? check all that applya.3b.1c.0d.-2e.5f.2a