Advanced MathEasyRecognising a nonlinear equation
Advanced Math practice question
Which of the following equations is NOT a linear equation?
- A. x² + y = 3Correct
- B. 2x + y = 3
- C. x − y = 0
- D. y = 5x
Answer: A. x² + y = 3
The x² term makes the first equation nonlinear; the others have only first powers of x and y.
Why the other answers are wrong
- B. 2x + y = 3
- Both variables appear to the first power.
- C. x − y = 0
- Both variables appear to the first power.
- D. y = 5x
- A line through the origin.
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