Question

1. Which set of ordered pairs in the form of (x,y) does not represent a function of x?

A. (1, 1.5), (2, -1.5), (3, 1.5), (4, 1.5)
B. (0, 1.5), (3, 2.5), (1, 3.3), (1, 4.5)
C. (1, 1.5), (-1, 1.5), (2, 2.5), (-2, 2.5)
D. (1, 1.5), (-1, -1.5), (2, 2.5), (-2, 2.5)

Answer 1

ordered pairs with the same first number and different second numbers is not a function.
So the best answer is :
B. (0, 1.5), (3, 2.5), (1, 3.3), (1, 4.5)