Answer:
Yes, it is a function
Step-by-step explanation:
A function is where there is no two of the same domain.
The domain is the first coordinate.
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Answer:
If is positive, then the parabola opens upward, so the function decreases on and increases on . But if is negative, then just the reverse
Answer:
28.8
Step-by-step explanation:
A squared plus b squared equals c squared.
Answer:
2 x 15 +7
Step-by-step explanation: