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Use implicit differentiation of the equation below to determine the slope of the graph at the given point. xy = 4; X= - 16 :)= -4 The slope of the graph at the given point is (Simplify your answer.)dx ay dt in terms of x, y, and dt Suppose that x and y are both differentiable functions of t and are related by the given equation. Use implicit differentiation with respect to t to determine x + yo = 2 dy dt