Algebra Explained

What are independent and dependent variables in algebra?

Variables can be broken down into independent and dependent variables. An independent variable is a quantity that increases or decreases (is variable), or that has an infinite number of values in the same expression. For example, in the expression x2 + y2 = r2, x and y are variables. A dependent variable is a quantity that varies, but is produced by changes in the independent variable. In other words, the dependent variable’s value is dependent on the independent variable. For example, in the expression f(x) = y, x is the independent variable and y is a dependent variable (because y is dependent on the value of x).


This is a web preview of the "The Handy Math Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App