Question

Which of the following is NOT a function?

A. {(3,-1). (-4, 12), (5,9), (6,-2)]
B. {(-8, 11), (5, -14), (1.0), (3, 3)}
C. [(4, 10), (13,-8), (4, 5), (2, -3)]
D. [(5, 1), (8, 1), (-7, 1), (0, 1);

Answer 1

Option A is not a function because it has repeated x-values.

Step-by-step explanation:

A function is a relation where each input value (x) corresponds to exactly one output value (y). In the given options, a relation is represented by a set of ordered pairs. To determine if it is a function, we need to check if any x-values are repeated.

In option A, the x-value 5 is repeated, so it is not a function.

Therefore, option A is NOT a function.