This question was deployed live in an event with 60 seconds as the time limit, and about 4% got this right then. Will you do better? √ is the square root.

Which of the following equation(s) does

*not*have a unique slope? Choose one or more.- y = 2x + 3
- y
^{2}= x^{2} - y = √(x)
- √(x) = √(y)

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