Answer
The given equation is not a function, because it does not pass the vertical line test. The two points (2,5) and (2,1) pass through the same vertical line, meaning the given equation is A) Not a function.
Work Step by Step
The given equation is not a function, because it does not pass the vertical line test. The two points (2,5) and (2,1) pass through the same vertical line, meaning the given equation is A) Not a function.