Question

Is x2 + 2y = 4 a function?

Answer 1

yes

Explanation:

there are variables so it is a function

Answer 2

Yes, x^2 + 2y = 4 is a function.

Explanation:

x^2 + 2y = 4

Solve for y.

2y = -x^2 + 4

y = -(1/2)x^2 + 2

f(x) = -(1/2)x^2 + 2

Answer: Yes, x^2 + 2y = 4 is a function.