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Does the parabola open upward or downward?

Determine if the parabola for the equation, y = -2x^2 - 4x + 6, opens upward or downward. Find the vertex, x-intercepts, and y-intercept without graphing.

keywords: concave, concae-up, concave-down

Solution Summary

Whether a parabola opens upward or downward is investigated.

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