A number whose value never changes is called a

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Prepare for your Leaving Certificate Mathematics exam with a comprehensive practice test featuring key definitions. Use flashcards, multiple choice questions, and detailed explanations to ensure success and mastery of fundamental math concepts.

Multiple Choice

A number whose value never changes is called a

Explanation:
A fixed number is called a constant. In algebra, a variable is a symbol that can take different values, while a constant has the same value no matter what the variable does. For example, in an expression like 4x + 7, the 4 is a coefficient (the number multiplying the variable), and the 7 is a constant—the part that stays the same regardless of x. Even well-known numbers like π are constants because their value doesn’t change. A substitute isn’t the standard term for a fixed value in an expression, so it doesn’t describe this concept.

A fixed number is called a constant. In algebra, a variable is a symbol that can take different values, while a constant has the same value no matter what the variable does. For example, in an expression like 4x + 7, the 4 is a coefficient (the number multiplying the variable), and the 7 is a constant—the part that stays the same regardless of x. Even well-known numbers like π are constants because their value doesn’t change. A substitute isn’t the standard term for a fixed value in an expression, so it doesn’t describe this concept.

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