The area under the velocity time graph of an object is equal to the distance travelled by that object in that time. This is because displacement is the integral of velocity with respect to time so integrating velocity from time A to time B will give the displacement from time A to time B. ( Integrating is the same as calculating the area under the graph)
The Average Velocity on a position time graph or a velocity time graph.
speed
It gives you the speed. (not the velocity)
deceleration can be measured from a velocity time graph by calculating the gradient of the velocity time graph if the V-t graph was linear. If the v-t graph was a curve then the differentiatial of the equation of the curve will give the deceleration variation with time.
To calculate the gradient of the line on a graph, you need to divide the changein the vertical axis by the change in the horizontal axis.
distance
If I can't see the graph then how will I know the answer?
well, the area under the curve between a time interval is equal to the distance traveled on that specific time interval. So one quantity is distance. As for another quantity, the answer would be velocity, but I think they may want a less obvious answer. A quantity out side of velocity could be instantaneous acceleration. This is given by the slope of the the tangent line to the velocity-time graph. Hope this helps you answer your question. Though I think the most simple way to understanding why is to take a course of calculus.
The scale can be anything that you choose - but you must give it with the graph.
A trend
give me graph paper first!!!!!!!!!!!!!!
Slope of the graph will give you speed.
They both give you info on a specific thing or object
The Average Velocity on a position time graph or a velocity time graph.
Answerto give examplesa type of graph
speed
They have two bars on a single graph.