question_answer

  The path of a train A is given by 2r + y ? 4 = 0 and the path of another train B is given by the equation 4x + 2y - 16 = 0. Represent this situation graphically.

Answer:

  Given linear equations are    

	A	B	C
x	½	0	1
Y	0	-1	1

Plot the points and  to get the line  

	D	E	F
x	5	3	1
y	4	5	6

Plot the points and  to get the line  (i) Clearly two lines intersect at point (3, 5) x = 3 and y = 5 is the solution (ii) Draw EL as perpendicular on Y-axis. Let intersecting point of lines x + 2y = 13 with Y = axis be M. the coordinates of point M are  Area of required triangle sq. units