Types of Variables

There are two types of variables, namely

• Dependent Variable
• Independent Variable

Dependent Variable

The variable whose value depends on the estimation of another variable in its condition is termed a dependent variable …

For example: Consider the condition y = 5x + 3. In this equation, the value of the variable ‘y’ changes as per the adjustments in the value of ‘x’. 

Independent Variable

An independent variable is a variable that describes a variable whose values are independent of changes. Suppose If x and y are two variables in an algebraic equation then every value of x is linked with any other value of y. Here  value of ‘y’ is said to be a function of x value known as an independent variable, and  value of ‘y’ is known as a dependent variable.

For example: In this function y = x², here x is an independent variable and y is a dependent variable whose value is dependent on the value of x.

Examples of the variable equation or algebraic expression:

• y = 5x +10  
• 3y = 99x + 9
• 3x + 9 
• 3x² + 5x 

In this way, a variable is used in an equation to find the other variable or to complete the equation…

An equation in algebra consist of two algebraic expressions separated by an inequality sign generally equal to. For example, ax + b = c. These equations consist of some numbers, a variable, operator sign and inequality sign. An equation with variable is used to represent a general condition . For example, if we ask, if three more than twice of a number is equal to five, then what is the number. In this case, we actually don’t know the answer however we can represent it as 2x + 3 = 5, here x is the variable which represent the unknown number.

In this article, we will read in detail about equation with variables, types of variables and equation with variables on both sides and solve problems based on them.