Differentiate the function. Then find an equation of the tangent line at the indicated point on the graph of the function. yzf(x)= 1+46-x, (x,y)= (2,3) The derivative of the function y = f(x) = 1 +-/6-x is The equation of the tangent line at (2,3)is â A. y-3=-4(x-2). O C. . âB. y-3x -2). 4 â D. y-3-4(x-2). y-3-2). 4