independent variable


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 = 7x + 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 is x.

Related Terms for Independent Variable

  • Domain
  • Variable
  • Equation