Draw the graph of the following equations.
x+y=5 ; x-y=5

and find the solution from the graph.also shade triangle formed on y-axis

Answer :

First we form a table for different values of x and y :
 

x + y  = 5		x  - y  =  5
x	y	x	y
0	5	0	- 5
- 2	7	- 2	- 7
2	3	2	- 3
5	0	5	0
7	- 2	7	2

Now we represent these points on x - y  plane and shade the region bound by the lines and the y axis :



So,

From graph we get

x  =  5 and y  = 0                                        (  Ans )