coordinate
It is the point which corresponds to 0.
A point on a number line.
magnitude
Yes, it does.
Do you mean a number line?The question you asked contains the answer. Every point on a number line corresponds to a number, and every number has a corresponding point on the number line.
The point on a number line that corresponds to a number is called an "ordered pair" of a real number.
coordinate
coordinate
coordinate
It is the point which corresponds to 0.
A point on a number line.
The coordinate of that number.
magnitude
Yes.
Yes.
yes