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The constant is the number; the variable is the letter.
Such a number is called a "constant". If the number appears in front of a variable, it is sometimes called a "coefficient".
constant
Constant
A constant.
The constant is the number; the variable is the letter.
A constant is not a variable at all, and none of its factors was a variable. It is constant.
Such a number is called a "constant". If the number appears in front of a variable, it is sometimes called a "coefficient".
A [real] constant.
a constant is a number with no variable
Constant
constant
We call a number that has no variable attached to it, a constant. A number attached to a variable, as in 3x, is called a coefficient.
It are a variable you add modifer 'const' to. It means these variable mustn't be modified.
If by permanent you mean constant, you cannot change something that is constant, therefore you cannot add to it (letters or otherwise). It has to be variable. Constant and variable are mutually exclusive terms.
The constant variable is usually the 'X' variable or the variable that stays the same. For example, it may be the 'X' variable or the same number.
constant