I need only answer

Q1

Use f' (x) = lim f(x + h) - f(x) to find the derivative at x for the given function. h-0 h s(x) = 5x +7 s' (x) =Find an equation of the line tangent to the graph of f(x) = - x* at (1, - 1). The equation of the tangent line is y = (Type an expression using x as the variable.)