We are told that the given point satisfies the first equation of the system (and it does). If it is a solution, it will also satisfy the second equation. Let's see

-7(22) + 3(0) = -36

-154 = -36 (false)

The given point is NOT a solution.

-7(22) + 3(0) = -36

-154 = -36 (false)

The given point is NOT a solution.