**Definition of Independent Variable**

- Independent variable is a variable in an equation, whose values make up the domain.
- In other words, an independent variable in an equation may have its value freely chosen regardless the values of any other variable.

**Examples of Independent Variable**

- In the equation
*y*= 7*x*+ 5, the independent variable is*x*. The variable*y*is not independent, because it depends on the value chosen for*x*.

**Solved Example on Independent Variable**

What is the independent variable in the function?

Choices:

A.f(x)

B.

C.x

D. no independent variable

Correct Answer: C

Solution:

Step 1:Independent variable is a variable in an equation, whose values make up the domain.

Step 2:So, the independent variable in the given equation isx.

**Related Terms for Independent Variable**

- Domain
- Variable
- Equation