Verified answer

Answer:

C. 3y = 2x + 1

Explanation:

C. 3y = 2x + 1 is describe a function

• This is because, by definition of the function, there is only one value for y for a single value of x.

A. x² + y⁴ = 0

B. x² + y² = 4

• There are two values of y for one value of x in A and B, therefore it's not describe a function

D. x + y + z

• D is an expression not an equation, hence it isn't a valid answer.

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Answer:

C. 3y = 2x + 1

Step-by-step explanation:

Functions have the property that each input is related to exactly one output. For example, in the function f(x)=x2 f ( x ) = x 2 any input for x will give one output only.

(hope this help, just correct this if my answer is wrong ^^)