Question: (x, y) = f(x) = 5 - 7x4 Describe the concavity. (Enter your answers using interv concave upward concave downward

(x, y) = f(x) = 5 - 7x4 Describe the concavity. (Enter

(x, y) = f(x) = 5 - 7x4 Describe the concavity. (Enter your answers using interv concave upward concave downward

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