Inertia is directly related to Mass .
Step-by-step explanation:
Mass means that the amount of matter of an object. Inertia indicates the resistance of the physical object. The object with high mass have more inertia too. The mass and inertia both are directly proportional to each other. Mass is the quantity that completely depends upon the inertia of the object. An object with more mass has more chance to change its resistance as they are dependent on each other.