Which of the following could not be true for a function?

a) domain is {2}, range is {2}
b) domain is {2, 3}, range is {2}
c) domain is {2}, range is {2, 3}
d) domain is {2, 3}, range is {2, 3}

C) Domain is {2}, Range is {2, 3}

Step-by-step explanation:

For one value of x there are two values of y, which contradicts the definition of a function.

Definition of a function:

A function is an equation for which any x that can be plugged into the equation will yield exactly one y out of the equation.

All the other options follow this definition except C

Alternative C is not true for a function.

Step-by-step explanation:

This is because a single x-value (domain) can not be mapped onto two unique y-values (range) since this violates the definition of a function defined by a relation

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step-by-step explanation:

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