3-velocity-time graphs

The figure shows three cars moving in different ways. The velocity-time graph for each car is shown as well.
1-What does a horizontal line on a velocity-time graph tell you about the velocity?
2-What feature of a velocity-time graph tells you that the object is accelerating?
3-The velcity-time graph for an object is a horizontal line through the origin. What can you say about the object's motion?
Velocity-time graphs look very similar to distance-time graphs but beware, they are quite different. Do not confuse the two.

A cyclist's journey

A cyclist is riding along a straight road. Look at the velocity-time graph for the cyclist. The slopeof the velocity-time graph tells you how the velocity is changing.
1-In which parts of the journey is the velocity steady?
2-What is the cyclist's velocity
(a) in section A?
(b) in section C?
3-How does the graph show an acceleration?
4-How does the graph show that the cyclist slows down quicker than she speeds up?
A steeper slope on a velocity-time graph means a bigger acceleration (or deceleration)