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Multiple Choice

A lighting designer is using a parabolic reflector to focus a spotlight for a stage production. The curvature of the reflector is modeled by the quadratic equation y=0.75x24x+12y = 0.75x^2 - 4x + 12. Based on the leading coefficient aa in this equation, in which direction does the reflector's curve open?

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Updated 2026-04-21

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