Axis
It can be called a constant or fixed value. If it is not a value but a cell reference then it can be called an absolute reference.
It is a fixed reference point whose elevation above a given datum line
An axis can be defined as an imaginary line about which a body rotates, In math it can be defined as a fixed reference line for the measurement of coordinates.
An absolute reference. An absolute cell reference.
it is a satilite that orbits the moon but im not sure what it is used for .
No, they are called absolute references.
Axis
It is because many things are measured with reference to a fixed point: it space or time. This point is called a reference point or origin.
motion : when a body is moving or changing its position with respect to its surroundings is called motion. rest: when a body is not moving or fixed at a place with respect to its surroundings is called rest.
What is the fixed reference point in the photos?
A line.
The type of cell reference that refers to a fixed position in a worksheet is called an "absolute cell reference." It is denoted by a dollar sign ($) before the column letter and row number (e.g., $A$1). This means that when you copy a formula containing an absolute reference to another cell, the reference remains constant and does not change based on the new location.