The term for replacing a variable with another value or expression is "substitution."
evaluation, evaluate.
That means that you replace something, for something else. For example, a variable for a number, or a variable for some other expression.
Assuming you call your number "n", the expression would be "14n". You can replace "n" with whatever variable you want to use.
The number is called the coefficient of the variable
It depends on the value of x. The x is a variable. To evaluate an expression, you need to have a value (number) to replace the x.
evaluate.
evaluation, evaluate.
That means that you replace something, for something else. For example, a variable for a number, or a variable for some other expression.
Assuming you call your number "n", the expression would be "14n". You can replace "n" with whatever variable you want to use.
That looks like the description of an EXPRESSION. However, an expression need not have "at least one operation"; a single number, or variable, is a perfectly valid expression.
A variable is a letter that represents a number. An expression that contains at least one variable is called variable expression, also called algebraic expression. A variable expression has one or more terms. A term is a number, a variable, or a product of numbers and variables. For example,3(x^2)y + 2xy + x - 7 is a variable expression, where you have 4 terms.When working with variable expression, you often use the substitution principle:If a = b, then a may be replaced by b in any expression.The set of numbers that a variable may be represent is called replacement set, or domain, of the variable. To evaluate a variable expression, you replace each variable with one of its values and simplify the numerical expression that results.Example: Evaluate the expression 2x - 4y for x = 5 and y = -9.Solution:2x - 4y= 2(5) - 4(-9)= 10 + 36=46
The number is called the coefficient of the variable
It depends on the value of x. The x is a variable. To evaluate an expression, you need to have a value (number) to replace the x.
It is the coefficient of the variable
It is a poorly worded question. Any number in an expression can be a numerical variable.
a variable expression
Variable is any letter used in an algebraic expression, and can vary (change form) to be any number, and one variable means the same number in any single algebraic expression. Usually algebra is simplifying the expression or equation until you know what the variable is equal to.