Advanced MathEasyPoint on the graph of a squaring function
Advanced Math practice question
Which of the following points lies on the graph of y = x² in the xy-plane?
- A. (−2, 4)Correct
- B. (2, −4)
- C. (4, 2)
- D. (−2, −4)
Answer: A. (−2, 4)
(−2)² = 4, so (−2, 4) is on the graph.
Why the other answers are wrong
- B. (2, −4)
- x² is never negative, so y = −4 is impossible.
- C. (4, 2)
- 4² = 16, not 2.
- D. (−2, −4)
- y cannot be negative on this graph.
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