The dependent variable is the one that responds to changes in the independent variable. It goes on the vertical axis, because its value depends on what the input was.
Math Dictionary / Dependent Variable
Dependent Variable
A dependent variable is the output value that changes based on the input.
FunctionsGrade 6Grade 7Grade 8Algebra 1SATACT
What it means
It depends on another variable, often the independent variable.
Also called: output variable
Examples
| In y = 2x + 1, y is the dependent variable |
| Total cost depends on the number of items |
| Distance may depend on time |
Common mistake
The dependent variable is usually the output, not the value you choose first.
Try one
Question: In C = 5n, if cost depends on number of tickets, which variable is dependent?
Show answer
C, the cost.