9. Use the function y = 2x2 + 3x -7 to answer the following questions. Part I: What is the y-intercept of this function? Express your answer in the form (x.y) . (4 points) Part II: What are the coordinates of the vertex? Express your answer in the form (x,y) . (4 points) Part III: Use the quadratic formula to find the coordinates of the x-intercepts of the function's graph. Round your answers to the nearest hundredth. Express your answer in the form (x,y) .(4 points)