Question

The amount of wall space in his bedroom will determine how much paint he needs.which one is the independent variable and which one is the dependent.

Answer 1

Independent- wall space
Dependent- how much paint he needs

How much paint he needs depends on how much space the wall has

Answer 2

Independent- wall Dependent- amount of paint

Explanation:

The independent variable is the variable the experimenter changes or controls and is assumed to have a direct effect on the dependent variable. ... The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.