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Loading... A variable is a symbol for a value we don't know yet, usually a letter like x or y. Learn how to use variables in algebra, geometry and physics with examples and diagrams.
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In real-life there are things that remain constant like your date of birth. However, there are things that vary with time and place like temperature, age, height etc. Since these quantities change they are may be called variables. In algebra, a symbol (usually a letter) standing in for an unknown numerical value in an equation or an algebraic expre...
The dependent variable is a variable whose value is determined by the quantity another variable takes. For instance, in the equation y = 2x + 3, x can take any value, like 1, 2, 3. However, the value of y will depend on the value of x. So, if x = 1, y will become 5, and if x = 2, y will become 7, and so on. Therefore, y is called the dependent vari...
An independent variable in an algebraic equation is one whose values are unaffected by changes. If an algebraic equation has two variables, x, and y, and each value of x is related to any other value of y, then x is an independent variable, and y is a dependent variable. For instance, in the equation y = 2x, x can take any value. Hence, it is the i...
Learn what a variable is in math, how to identify dependent and independent variables, and how to solve equations with variables. See examples, practice problems, and games to master the concept of variables.
Learn what is a variable in math, how to define it, and how to use it in equations, functions, and statistics. Find out the difference between dependent and independent variables, and see examples and FAQs.
- 5 min
- A variable is an alphabetical letter or character that is used to represent an unknown quantity. The value of a variable can vary as per the mathem...
- Let us say, 4x + 5 = 19 is an algebraic expression, then x is the variable and 4 is its coefficient. 5 and 19 here are the constants.
- A dependent variable is a variable in an expression that depends on the value of another variable. For example, if y = 2x, then y depends on x. So,...
- An independent variable is a variable that does not depend on any other variable for its value. For example, in an expression, 2y = 9x + 1, x is an...
- Random variable is the term used in probability theory, whose value depends on the outcome of a random experiment.
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define variable in math terms define expression in math define term in math define coefficient in math define constant in math In mathematics, a variable (from Latin variabilis, "changeable") is a symbol, typically a letter, that holds a place for constants, often numbers. [ 1 ][ 2 ][ 3 ][ 4 ][ 5 ] 6 One say colloqually that the variable represents or denotes the object, and that the object is the value of the variable.
A variable is a character that has an unknown value and is represented by an alphabet or a letter. A variable can be any letter from ‘a’ to‘ z’. However, the most commonly used letters used as variables are a, b, x, y, and z . A coefficient is a numeric value multiplied by a variable.
Sep 4, 2012 · Learn the basics of algebra with a free introductory course on variables and equations at Khan Academy.
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Definition. In Algebra 1, a variable is a symbol, usually a letter like x, y, or z, that represents a number whose value can change. Variables are used to generalize mathematical expressions and equations, allowing us to work with unknown values and solve problems. Here’s how variables are typically used:
