Can someone answer this one? Question from MathLab for Math 209

Refer to the graph of y = f(x) = x + x shown. 20- a) Find the slope of the secant line joining ( - 3, f( - 3)) and (0, f(0)). 18-7 16- b) Find the slope of the secant line joining ( - 3, f( - 3)) and ( - 3 + h, f( - 3 + h)). 14- c) Find the slope of the graph at ( - 3, f( - 3)). 125 d) Find the equation of the tangent line to the graph at ( - 3, f( - 3)). 10- C X 5 -23 a) The slope is (Type an integer or a simplified fraction.) Enter your answer in the answer box and then click Check