Question

Which statement is true?

A dilation is a function because every point on the pre-image corresponds to exactly one point on the image.
A dilation is a function because the scale factor is always greater than 1.
A dilation is not a function because a point on the pre-image could be mapped to more than one point on the image.
A dilation is not a function because the image is not congruent to the pre-image.

Answer 1

The second statement

Answer 2

A dilation is a function because the scale factor is always greater than 1.