Draw the graph of each of the following linear equations in two variables
i) x + y = 4
ii) x - y = 2
iii) y = 3x
iv) 3 = 2x + y

i) To draw the graph, we need atleast two solutions of the equation.

x	0	4
y	4	0
(x, y)	(0, 4)	(4, 0)

Thus, we draw the graph by plotting the two points from table and then joining by a line.

ii) To draw the graph, we need atleast two solutions of the equation.

x	0	2
y	-2	0
(x, y)	(0, -2)	(2, 0)

Thus, we draw the graph by plotting the two points from table and then joining by a line.


iii)To draw the graph, we need atleast two solutions of the equation.

x	0	1	-1
y	0	3	-3
(x, y)	(0, -2)	(2, 0)	(-1, -3)

Thus, we draw the graph by plotting the two points from table and then joining by a line.


iv)To draw the graph, we need atleast two solutions of the equation.

x	0	1	-1
y	3	1	5
(x, y)	(0, 3)	(1, 1)	(-1, 5)

Thus, we draw the graph by plotting the two points from table and then joining by a line.