What is a variable?

Variable is something whose value can change

Suppose we have an equation

Here

• x is a variable
• Number multiplied to x is coefficient – 3
• And 1 is a constant

Similarly,

For equation

Here, variable is x

For equation

Here, variable is p

Similarly,

For equation

Here, variable is y

So, we can use any letter as variable

Let’s check some more examples of variables