Answer:
Velocity
Explanation:
x-t curve means position vs time graph in which position (x) is in x-axis and time is in y-axis.
Slope of a graph = [tex]\dfrac{\Delta y}{\Delta t}[/tex].
We know that, velocity = displacement/time
or we can say that slope = displacement/time = velocity
Hence, the correct option is (b) "velocity".
