gives values of the functions and The functions f and g have continuous second derivatives. The table their derivatives at selected values of x. a) Let k(x) = f(g(x)). Write an equation for the line tangent to the graph of k at x = 3. X 1 2 3 6 f(x) -6 2 8 4 f'(x) 3 -2 7 5 g(x) 2 -3 6 3 g'(x) 8 0 2 -1 11. Consider the curve defined by xy - x + y = 5. a) Find dy dx