Graph the following quadratic function. f(x)=7x Find the vertex of the function. The vertex is (0,0). (Simplify your answer. Type an ordered pair.) Find the y-intercept of the function. The y-intercept is (0,0). (Simplify your answer. Type an ordered pair.) ..... Find the x-intercept(s) of the function, if any exist. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The x-intercept(s) is/are (0,0). (Simplify your answer. Type an ordered pair. Use a comma to separate answers as needed.) B. There are no x-intercepts.