You can tell which is the independent variable and which is the dependent variable by changing the equation into an "if/then" statement.
Example: y = 3x
In this example, x is the independent variable and y is the dependent variable. If you give me x, I will tell you y.
If x = 1, then y = 3
If x = 2, then y = 6
So you give me the independent variable, and then I will be able to determine the dependent variable.
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It depends on the number of variables and their nature: 2 variables, both independent: either axis 2 variables, one independent: x-axis 3 variables, all independent: any axis 3 variables, 2 independent: x or y-axis. 3 variables, 1 independent: x-axis. and so on.
the independent variable controls the dependent variables
how do u identify a independent variable
The test variable (independent variable) controls the outcome variable (dependent variable).
An Independent variable is what you control; you decide the focus of your experiment and what you control on the independent variable. Dependent variable is what you want to look at or find results for; you decide what you want to see from manipulating your independent variable.