Class 10, Maths Ch-3| Graphical methods of finding solution| Lec-2|NCERT|CBSE|BSEB|Meraj

Class 10, Maths Chapter-3||Graphical methods of solution of a Pair of Linear equations in two variables||Lecture-2||NCERT||CBSE||BSEB||Meraj ki padhai
PAIR OF LINEAR EQUATIONS IN TWO VARIABLES
Graphical Method of Solution of a Pair of
Linear Equations
i) the lines may intersect in a single point. In this case, the pair of equations has a unique solution (consistent pair of equations)
(ii) the lines may be parallel. In this case, the equations have no solution (inconsistent pair of equations)
(iii) the lines may be coincident. In this case, the equations have infinitely many solutions [dependent (consistent) pair of equations].
Consider the following three pairs of equations.
(i) x - 2y = 0 and 3x + 4y - 20 = 0 (The lines intersect)
(ii) 2x + 3y - 9 = 0 and 4x + 6y - 18 = 0 (The lines coincide)
(iii) x + 2y - 4 = 0 and 2x + 4y - 12 = 0 (The lines are parallel)
it contains all concept of pair of linear equations in two variables required for Board exam CBSE || BSEB || ICSE || NCERT
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pair of linear equations in two variables class 10 chapter 3
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