For this case, we have to: Be an equation of the form [tex]y = f (x)[/tex], 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 [tex]y = 2x[/tex]
We want to know if the pair [tex](x, y) = (2,1)[/tex] is the solution of the equation. If we replace, we have:
[tex]1 = 2 (2)\\1 = 4[/tex]
Equality is not met, so the pair is not a solution.
Answer:
Replace the pair in the equation and see if equality is met.
