What is the difference between the input and the output of a function? The input is the range; the output is the domain because it depends on the value of the input. The input is the range; the output is the dependent variable because it depends on the value of the input. The input is the independent variable; the output is the dependent variable because it depends on the value of the input. The input is the independent variable; the output is the domain because it depends on the value of the input. The output is the independent variable; the input is the dependent variable because it depends on the value of the output. Additional Materials