Linear equations in two variables

Linear equations in two variables
Introduction of linear equations in two variables.
Graph of a Linear Equation in two Variables
(Solution of pair of linear equations in two variables by graphical method.)
Geometric representation of different possibilities of solutions/inconsistency.
Solution of linear equations by different algebraic methods.
by substitution.
by elimination.
by cross multiplication.
Algebraic conditions for number of solutions.
Equations of Lines Parallel to x-axis and y-axis.