Mathematics, 10.12.2019 18:31 bloodgif8921

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.

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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 i...

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