Question

True or false.
A quantity which takes a fixed numerical value is called variable.

Answer 1

Step-by-step explanation:

vii) A quantity which takes a fix numerical value is called variable. (viii) A quantity or symbol which has a no fixed value but it can represent any numerical values is called variable. (ix) 15x, z/3, 7/m are some of the examples of constants. (x) x, a + b, c – 2, a 13 are some of the examples of variables.

Answer 2

The statement is false. A quantity which takes fixed numerical value is called constant.

Step-by-step explanation:

Constants and variables are two concepts of algebraic mathematics.

Constants:

• A constant is a fixed value, which is used in expressions and equations in algebra.
• It does not change over time and has a fixed value.
• It is usually represented as numbers.
• It is usually used for representing known values in an equation, expression or in even in programming language.

Variables:

• Variables are referred to the terms which change or vary with time.
• It does not remain fixed, unlike constants.
• Variables are generally represented as letters or symbols.
• It has no fixed value attached to it and its value changes depending on the equation.

Variables and constants together makes an equation in mathematics.

Example: $(x+y)=45$

In the above equation, $x$ and $y$ are variables and $45$ is a constant.