Answer :
Explanation:
The two main variables in an experiment are the independent and dependent variable. An independent variable is the variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable is the variable being tested and measured in a scientific experiment.
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The formula for the area of a square, where the side length is the independent variable and the area is the dependent variable, is a nonlinear function, because the points of the function do not lie on a straight line. The formula for the perimeter of a square, where the side length is the independent variable and the perimeter is the dependent variable, is a linear function, because the points of the function lie on a straight line.
