Question

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

Answer 1

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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