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 )

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