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A Boy Is Standing on a Flat Field and Tosses f(x)=−4x2+8xf(x)=-4 x^{2}+8 x

Question 139

True/False

A boy is standing on a flat field and tosses his ball toward a second boy standing at the other end of the field. The path of the ball is a parabola, and the equation of the path is f(x)=−4x2+8xf(x)=-4 x^{2}+8 x . Based on this information, answer the question.
-The parabola opens up.

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