Which ordered pair is not a solution of f (x) = 2x + 9?

(0,9)

(7,23)

(3, 14)

(2, 13)

(3, 14)

Answer: (3, 14)

Explanation: f (x) is just another way to write y. Each ordered pair has a x value and an y value. For example (0,9). The 0 can be used to represent the variable x. The 9 can can represent the variable y In an equation. To get the answer just plug in each ordered pair into the equation and see if the equation is true. If you Plug in (3,14) into f (x) = 2x + 9. 14 = 2 (3) + 9 = 15. This equation is untrue because 14 doesn't equal 15.