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Q: An expression that contains at least one variable is called an algebraic expression?

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It is called the coefficient of the variable

When you replace a variable with a quantity, it is called a substitution.

alebraic expression! :p

It's called an algebraic 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

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It is called the coefficient of the variable

That is often called the coefficient.

When you replace a variable with a quantity, it is called a substitution.

A variable is a letter that represents a number. A n expression that contains at least one variable is called a variable expression or an algebraic expression.A variable expression has one or more terms. A term is a number, a variable, or a product of numbers and variables.An algebraic expression consisting of only one term is called a monomial (3x, xy, 2y, xyz); of two terms is called a binomial (x + y, x^2 - 1, a + 2b); of three terms is called trinomial (x + 2y - 4, 3x^2 + 2xz +3). In general, an algebraic expression consisting of two or more terms is called a polynomial

It is, in fact, called an expression. To be more precise, an algebraic expression.

I think it is called "replacing" or "substitution".

alebraic expression! :p

Algebraic expressions may contain variables but they are not normally called variables. In fact, if they are related to identities, they need not be variable. For example, (4x2 + 8xy + 4y2)/(x + y)2 is an algebraic expression, but it is not a variable: it equals 4.

It's called an algebraic expression.

It is called evaluating the equation.

An algebraic equation or inequality can have a solution, an algebraic expression cannot. If substituting a number in place of a variable results in the equation or inequality being a true statement, then that number is a solution of the equation or inequality.

To find the value of an algebraic expression is to evaluate it.

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