The answer depends on what relationship - if any - exists between the points in the table. There need not be any relationship.
A line is made up of many points.
It depends on how far away the observer is from the two points.
The horizontal distance. Points of latitude and longitude can't account for elevation.
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you subtract both elevation and then that would be the elevation...
relief
A depression contour line represents a closed loop on a map indicating a depression or low area of land. It connects points of equal elevation below the surrounding terrain.
Contour line connect points of equal elevation on a map, whereas relief is the difference in elevation from the highest and lowest on a map.
The answer depends on what relationship - if any - exists between the points in the table. There need not be any relationship.
latitude and longitude
A depression contour is a line drawn on a map connecting points of equal depth below a reference point, such as sea level. It represents a depression or a lower elevation relative to the surrounding terrain. These contours help in visualizing the shape and depth of the land surface.
The distance between two points must be known to determine the average slope between the two points. You must also know the change in elevation.
Freezing point depression and boiling point elevation are both colligative properties that occur when solute particles are added to a solvent. Freezing point depression lowers the temperature at which a solution freezes, while boiling point elevation raises the temperature at which a solution boils. These changes in the freezing and boiling points affect the physical properties of the solution, making it different from the pure solvent.
the measure of change in elevation in a certain distance is called gradient
altitude differential
Contour lines connect points with the same elevation or value, showing the shape and elevation of the land on a map.