The ordered pair is
and the equations of linear system are
.
To tell the ordered pair
is a solution of linear system, substitute
for x and 1 for y in each of the original equations.
Substitute
for x and 1 for y in the equation 1:
.


.
The above statement is true, so
is a solution of equation 1.
Substitute
for x and 1 for y in the equation 2:
.


.
The above statement is not true, so
is not a solution of equation 2.
Because
is not a solution of equation 2, it is not a solution of the linear system.
The ordered pair
is not a solution of the linear system.