For this case, we have to: Be an equation of the form
, where f (x) represents an expression as a function of the variable "x". To determine if an ordered pair is a solution to that equation, you must replace the pair in the equation and see if equality is met.
Example:
Let

We want to know if the pair
is the solution of the equation. If we replace, we have:

Equality is not met, so the pair is not a solution.
Answer:
Replace the pair in the equation and see if equality is met.