Displacement / time graphs

Question 1

How is the velocity of a displacement/time graph found?

Answer 1

Find the gradient using (y2-y1)/(x2-x1)

Question 2

How is the average speed of a displacement/time graph found?

Answer 2

(Total distance traveled)/(time taken)

Question 3

How is the average velocity of a displacement/time graph found?

Answer 3

(Displacement)/(time taken)

Question 4

What does a curved line represent on a displacement/time graph?

Answer 4

Acceleration / deceleration