Variable

Definition of Variable

• Variables are (usually) letters or other symbols that represent unknown numbers or values.

                              

Examples of Variable

• The following are examples of algebraic expressions and equations containing variables.

2x + 5 = 10, the variable here is x

7y + 10 = 24, the variable here is y

, the variables here are a and b

                     

Solved Example on Variable

Identify the variables in the equation, .                    

Choices:

A. 2 and y

B. x and y

C. x and 3

D. 2 and 3

Correct Answer: B

Solution:

Step 1: Variables are letters or other symbols that represent unknown numbers or values.

Step 2: Therefore, x and y are the variables in the given equation

y = 3x + 2.

            

      Related Terms for Variable

• Algebraic Expression
• Equation
• Symbols

 

      Additional Links for Variable

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