Question

Solve the following system of linear equation graphically x -y = 5 , x + y = 5

Answer 1

x - y = 5 …(1)

x + y = 5 …(2)

subtracting equation (2) from (1), we get

=> x - y - x - y = 10

=> -2y = 10

=> y = 10/-2

=> y = -5

put value of y in equation (1)

=> x - (-5) = 5

=> x + 5 = 5

=> x = 0