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31 March, 2009

Analysis from graph -II

Given below is the graph representing pair of linear equations in two variables
x-y=4 ,x-2y=4


The given two lines intersect at (4,0) which is the solution of given pair of linear equations in two variables.
Coordinates of points where lines cut the y-axis are A (0,-4) and C(0,-2)
Vertices of triangle formed by given lines and y-axis are A(0,-4), B(4,0) and C(0,-2)
The area of triangle ABC = 1/2 (2 x 4) = 4 square units

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