Write four solutions for the equation $2x+y=7$.

Check whether $\left(0,2\right)$ is a solution of the equation $x-2y=4$?

Check whether $\left(2,0\right)$ is a solution of the equation $x-2y=4$?

Check whether $\left(4,0\right)$ is a solution of the equation $x-2y=4$?

Check whether $\left(\sqrt{2}, 4\sqrt{2}\right)$ is a solution of the equation $x-2y=4$.

Check whether $\left(1,1\right)$ is a solution of the equation $x-2y=4$?