Compare a dilation to the other transformations:
translation, reflection, rotation.

Transformation involves changing the size, the position and the location of a shape.

When a shape is dilated, the size of the shape is altered to form a new shape

When a shape is translated, the shape is moved across the coordinates, but the size remains unchanged

When a shape is reflected, the shape is flipped across the coordinates, but the size remains unchanged

When a shape is rotated, it must be rotated across a point, and the size remains unchanged

The above means that translation, reflection and rotation are rigid transformation, while dilation is not.

Read more about transformation at:

link

A translation simply moves the graph, or pre-image, without changing the size or spinning the image. A reflection flips the pre-image across some line. A rotation spins the pre-image around a point. A dilation either expands or shrinks the pre-image.

Step-by-step explanation:

Hope this helps