This transformation requires us to shift 1 unit left and 4 units down.
A point is an exact location.
It has no length, width, or height.
It has no area or volume.
It has no mass, shape, or other physical properties.
As a model ...
-- you could use the period at the end of a sentence printed on paper.
It looks like this ==> ·
-- You could use the point of a very sharp pencil.
-- You could use the tiny dot that the point of
a very sharp pencil makes on paper.
-- You could use the point of a pin.
-- You could use the tiny hole that the point of
a pin makes in a sheet of paper.
These are all bigger than a real point. They all have a little bit of size,
length, width, height, and you can see them. But they get the idea across.
(They 'make the point'.)
