## 1. Linear equation in two variables Definition :

## 2. Solution of linear equations in two variables :

## 3. Solving Simultaneous linear Equations :

## (i). Substitution Method :

## (ii). Elimination Method :

## (iii). Cross Multiplication Method :

## 4. Condition for solvability of linear Equations :

## 5. Homogeneous System of Equations :

## 6. A system of two linear Equations :

## (a). If two lines intersect at a point :

## (b). If two lines Coincident to eachother :

## (c). If two lines parallel to eachother :

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