Hi Abhay,
Putting x = 1 in equation
2x + y = 5
2(1) + y = 5
2 + y = 5
y = 5 - 2
y = 3
Thus, y = 3 is the answer.
If the equation is 2x - y = 5.
Then, putting x = 1 in equation
2(1) - y = 5
2 - y = 5
2 - 5 = y
-3 = y
y = -3
Thus, y = -3 is the correct answer
Written on March 15, 2017, 1:24 p.m.