Respuesta :
Answer:
b. sometimes true
Explanation:
If the derivative of the cubic has two real zeros, the inverse relation will not pass the verical line test.
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The attached graph shows two inverse cubic relations, one a function, one not.

b. sometimes true
If the derivative of the cubic has two real zeros, the inverse relation will not pass the verical line test.
_____
The attached graph shows two inverse cubic relations, one a function, one not.