Question

4. If letters are used to denote numbers, they are called​

Answer 1

answer.

they are called variables

explanation.

they are generally used in representing linear equation

hope it helps....

Answer 2

If letters are used to denote numbers, they are called​ Variables.

• Any attribute, number, or quantity that can be measured or counted is referred to as a variable.Example of variables which are used to denote numbers - x,y,a,b,c,d etc.
• The value of variables can be anything that depends upon the particular functions.