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
    a2 + b2, the variables here are a and b

Video Examples: What is a variable?


Solved Example on Variable

Ques: Identify the variables in the equation, y = 3x+2

    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

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