Precisely that, a straight line, unless you are talking about vectors, though they have magnitude & direction. For a line that is not a vector you've given no information on which to base a proper answer.
If the line is generated by a linear equation & its ends are set by co-ordinates:
its length is
Square-root [ (dX)^2 + (dY)^2 ]
by Pythagoras, where the "d" means the change in the X and Y values.
Its direction then may be described by its angle A with the X-axis by basic trig:
Tan A = dY/dX.
Its gradient is dY/dX (function)
The direction and distance from the starting point to the ending point is referred to as "displacement." Displacement is a vector quantity that accounts for both the shortest straight-line distance between two points and the direction of that line. It differs from distance, which measures the total path traveled regardless of direction.
Displacement includes the distance between the starting and ending points and the direction in which you travel.
displacement
It could be a displacement vector.
A straight path that has a beginning but no end represents a ray in geometry. A ray starts at a specific point (the beginning) and extends infinitely in one direction. The angle associated with a ray is typically measured from the starting point to another point along the ray, but it can be described as having an angle of 0 degrees relative to its own direction.
The direction and distance from the starting point to the ending point is referred to as "displacement." Displacement is a vector quantity that accounts for both the shortest straight-line distance between two points and the direction of that line. It differs from distance, which measures the total path traveled regardless of direction.
The volume or weight of a fluid displaced by a floating body (as a ship) of equal weight
Distance is the total length of the path traveled, while displacement is the change in position from the starting point to the ending point in a straight line. Distance is a scalar quantity, indicating magnitude only, while displacement is a vector quantity, indicating both magnitude and direction.
a road......?
Displacement includes the distance between the starting and ending points and the direction in which you travel.
A never-ending straight path that goes in one direction is called a line. Euclid, the Greek mathematician, described it as "breathless length".
A vector.
hi
A vector.
It is called a line segement
displacement
In the given examples, distance is a scalar quantity that represents the total length of the path traveled, regardless of direction. Displacement, on the other hand, is a vector quantity that represents the change in position from the starting point to the ending point, including direction. Distance can be greater than displacement if the path is not a straight line.