For this case we have the following system of two equations with two unknowns:
[tex]x + y = 10\\x-y = -2[/tex]
We want to know if the point [tex](x, y) = (6,4)[/tex]is the solution of the system:
We replace:
[tex]6 + 4 = 10[/tex], meets the first equation.
[tex]6-4 = 2,[/tex] does not comply with the second equation.
Therefore, it is not system solution.
Answer:
The point is not system solution
