Question

check whether (2,-1) is the solution of the equation 2x+y=4​

Answer 1

❖ Question:-

Check whether (2,-1) is the solution of the equation 2x + y = 4​

❖ Answer:-

It can be observed that,

x = 2

y = -1

Substituting the values of 'x' and 'y' in the given equation,

2(2) + (-1) = 4

4 + (-1) = 4

4 - 1 = 4

3 ≠ 4

∴ (2,-1) is not a solution of the equation 2x + y = 4