Which of the Following Equations Does Not Define Y as a Function

question 53

Multiple Choice

Which of the following equations does not define y as a function of x ?

• A) \(y = 7 x + 2\)
• B) \(y = | x - 1 |\)
• C) \(x = | y |\)
• D) \(y = 2 x ^ { 2 } - 4\)