On a number line, that would be a single number that describes the position - basically, the number itself.
The coordinate of what?
The coordinate plane or grid.
57.5
The answer is 'graph'
coordinate, or coordinate value
All points whose y-coordinate is twice its x-coordinate.
The horizontal number line on a coordinate plane is called the x-axis, and the vertical number line on a coordinate plane is called the y-axis.
A line is undefined because all points on the line have the same x-coordinate.
The 'x' coordinate of B is the average of the 'x' coordinates of A and C. The 'y' coordinate of B is the average of the 'y' coordinates of A and C.
The x-coordinate of the midpoint is the average of the x-coordinates of the end-points of the line and the y-coordinate of the midpoint is the average of the y-coordinates of the end-points of the line.
The vertical number line which helpd to form the coordinate plane
Its coordinate is the value of the number itself.