Answer:
c. vertex
Step-by-step explanation:
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Answer:
1
Step-by-step explanation:
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Answer:
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Answer:
y ≠ - 9
Step-by-step explanation:
the denominator of the expression cannot equal zero as this would make the expression undefined. Equating the denominator to zero and solving gives the value that y cannot be
solve y + 9 = 0 ⇒ y = - 9 ← not permissable