1.
What is the fall in temperature from 13 hours to 21 hours?

2.
The coordinates of the origin are

3.
What are the coordinates of a point whose x-coordinate is 3 and y-coordinate is 4?

4.
What are the coordinates of a point whose x-coordinate is 1 and y-coordinate is O ?

5.
What are the coordinates of a point whose x-coordinate is 0 and y-coordinate is 1?

6. Observe the following velocity-time graph and answer the related questions:

At what time is the velocity maximum?

7.
At what time is the velocity minimum?

8.
At what times are the velocities equal?

9.
What is the fall in velocity from 7 to 11?

10.
What is the rise in velocity from 11 to 12?