Identify whether the quantities are directly related. Write YES if the two quantities vary directly and NO if they do not.

1) The number of positive COVID 19 cases and the number of casualties.
2) The cost per kilogram of rice and the number of kilograms of rice bought.
3) The number of face masks bought and the amount paid for the face masks.
4) The distance travelled by the car and the amount of gas in the tank.
5. The height of a person and his/her foot length.​