Which relation is NOT a function? Explain your answer. (1) {(1,2), (3,4),(4,5), (5,6)}
(2) {(3,1),(2,1),(1,2), (3,2)}
(3) {(4,1),(5,1),(6,1),(7.1)}
(4) {(0,0), (1,1),(2,2), (3,3)}

Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers