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Functions and Relations 2
A
B
Result
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Click "Yes" if the given relation is a function; otherwise, click "No."

1. y 2 =2x+3
Yes
No
Answer: No; there is an x, such as 1, that is paired with two values of y, namely, ± 5 .
2. y= x 2
Yes
No
Answer: Yes; for every x, there is exactly one y.
3. y= x 2 +10
Yes
No
Answer: Yes; for every x, there is exactly one y.
4. y= x
Yes
No
Answer: Yes; for every x, there is exactly one y.
5. y= x 3
Yes
No
Answer: Yes; for every x, there is exactly one y.
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