Question

Does the data in this table represent a function?

X -4 2 -4 2 -4
y -3 1 5 8 9

A. No, it is not a function.
B. Yes, a linear function.
C. Yes, a nonlinear function.​

Answer 1

Answer:

A. No, it is not a function.

Explanation:

A function is a set of ordered pairs where each input (x) has only one output (y).

However, in this table, the input x=-4 has two different outputs, y=-3 and y=5. Similarly, the input x=2 also has two different outputs, y=1 and y=8.

Therefore, it violates the definition of a function, and the correct answer is A. No, it is not a function.

Answer 2

A

Explanation:

It is not a function because both x-values -4 and 2 have multiple y-values. Try the vertical line test if you don't understand.