Pair : A set of two things.
Linear equations in two variables : If highest power of equation is only one then equation is said to be linear equation.
If equation consist two different variables, is called Linear equation in two variables.
Graphical representation of a linear equation (coming soon)
Geometrical Representation of a pair of equations
A linear equation in two variables form a straight line. similarly, pair of two equations in two variables can be represented by two straight lines.
These two lines form three possibilities.
i) Two lines intersecting at one point.
ii) Two lines are coincident.
iii) Two lines are parallel.
Relation between the behavior of lines and Ratios of coefficients of a pair of linear equations
Algebraic methods of solving a pair of linear equations
Substitution method
Elimination method
Cross-multiplication method
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