Take the -coordinate of the ordered pair and substitute it for in the equation. Take the -coordinate of the ordered pair and substitute it for in the equation. Do all indicated arithmetic. If the result is a true statement, then the ordered pair is an element of the solution set of the equation meaning that the point represented by the ordered pair is on the line represented by the equation. Otherwise, not.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it