For each real-world example below, list the variables(constant independent and dependent) , and relationship(direct or inverse) Explain your reasoning.

1 If the valve on an appliance is opened more, then the demand for propane vapor increases. The cylinders below contain liquid propane that boils off gas vapor to provide fuel to appliances.
Constant:
Independent:
Dependent:
Relationship: Direct or Inverse
Explanation:

2 Your friend is riding his bike and you notice the flap, flap sound of an airless tire. When you discover the flat tire, you help your friend using a pump to add air to the tire.

Constant:
Independent:
Dependent:
Relationship: Direct or Inverse
Explanation:
3 You are on a hot air balloon when all of a sudden it starts floating into the sky. Your younger sibling is freaking out and you must explain the reasoning the hot air balloon is floating off the ground.

Constant:
Independent:
Dependent:
Relationship: Direct or Inverse
Explanation: