Learn Class 8 Math - Linear Equations in One Variable

Algebraic Expressions

The algebraic expression contains constants, variables, and operations, such as multiplication, division, and addition.

A variable is an unknown number. They are generally expressed using letters like x, y, n, etc. A constant number is a number without any variables.

When a number follows a variable, it is called its Coefficient. Terms are separated by operators and can be numbers or variables.

Equation

An equation identifies two expressions as having the same value.

Linear Expression

A linear expression has a maximum power of 1 and is a variable function.

Example - 4x + 2, 4y etc.

Linear Equations

Linear equations represent straight lines. But, possibly, two variables have a relationship.

A few things to know about linear equations

• The linear equation has a sign of equality. In mathematics, the left-hand side (LHS) and right-hand side (RHS) of the equal sign denote the left-hand and right-hand sides.
• For most equation values, the LHS is equal to the RHS. For some values of the equation, however, this is not true, and these are the values of the solution.