Question

solve the pair of linear equations x+y=4 and 3x+y=8by graphical method​

Answer 1

Answer:

Let

x+ y = 4 ----------- (1)

3x+y = 8 ------------(2)

from equation (1)

x= 4-y ------(3)

put y= 0

x= 4-0 = 4

put y= 1

x= 4-1 = 3

x. 4 3

y. 0 1

from equation (2)

y= 8- 3x

put x=0

y = 8-0 = 8

put x=2

y= 8-6 = 2

x. 0 2

y. 8 2

Now plot graph between both equations

finally: x= 2

} Answer

y = 2