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

(0, 9)

(7, 23)

(7, 23)

(2, 13)

f (x) = 2x + 9

when x = 0, f (x) = 9

when x = 2, f (x) = 4+9 = 13

when x = 7, f (x) = 14+9 = 23

all is correct, all solutions are true

(0, 9)

(7, 23)

(7, 23)

(2, 13)

and btw you have 2 same answer (7, 23)

A solution of f (x) = 2x + 9 is (3, 14)

f (3) = 2 (3) + 9 = 6 + 9 = 15