Question

Is the relation in the table a function?

X
5
8
11
14
17
y
11
14
5
10
14
A. No. One input value has more than one output value.
B. Yes. Each input value corresponds to only one output value.
C. No. One output value has more than one input value.
D. Yes. Each output value corresponds to only one input value.

Answer 1

The answer of your question is D

Answer 2

The correct answer is C. No. One output value has more than one input value. A relation is a function if and only if each input value corresponds to exactly one output value. In this case, the output value 14 corresponds to two different input values, 8 and 17, so the relation is not a function.