Question

Is y^2-x^2=16 functional?

Answer 1

No, it is not a function.

Explanation:

Answer 2

• No

Explanation:

Given equation:

• y^2-x^2=16

Convert this to:

• y = ±
  `√(x^2 + 16)`

As we see each x-coordinate has two y-values referenced, it doesn't pass the vertical line test, this is not a function.