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04-02-2020
Mathematics

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If y = -x² + 14x + 7 , then x = 10 is a counterexample for which conjecture?

A.
y is always positive.
B.
y is always negative.
C.
y is a function of x.
D.
The graph of y is a parabola.

Respuesta :

goddessboi goddessboi

04-02-2020

Answer:

The correct answer is B

Step-by-step explanation:

If we plug in x=10 to the equation, we get y=47

Since y is positive, A is not an counterexample

Since y is a function of x, C is not an counterexample

Since the graph of y is a parabola, D is not an counterexample

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