Answer:
1.- Volume vs time
2.-Depth vs temperature
3.- Time vs height
4.- Time vs distance
5.- Time vs distance
6.- Time vs distance
Explanation:
1.- Is a single increasing relation, as the time pass, the volume is increasing.
2.- Is a single decreasing relation, as the depth increases, the temperature decreases.
3.- Is like the no. 1, as the time goes by, the height of the plant increases.
4.- and 6 , are the same, the increasing relation are simple, as the time goes by, the distance is increasing.
5.- Is an irregular relation, because at the begging, as the time goes by, the distance also is increasing, but in some moment the distance start to decrease.