Three relationships are described below:
I. The amount of time needed to mow a yard increases as the size of the yard increases.
II. The amount of time needed to drive from city A to city B decreases as the speed you are driving increases.
III. The income of a worker who gets paid an hourly wage increases as the number of hours worked increases and increases as the salary rate increases.
What type of variation describes each relationship?
I is joint, II is inverse, and III is direct.
I is direct, II is inverse, and III is joint.
I is joint, II is direct, and III is inverse.
I is direct, II is joint, and III is inverse.