Solve the equation by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are located. −x2 − 4x = 0

Answers: The solution set is (-4,0) with an upward U shape, The solution set is (0,4) with a downward U shape, The solution set is (0,4) with a upward U shape and the solution set is (-2,4) with an upward U shape