NEED HELP WITH THESE QUESTIONS

Problems 6 and 7 refer to the graph of x = y - 6y +4. 6. Give the vertex of the parabola and its axis of symmetry (Hint-complete the square) 7. This graph opens: A. Up B. Down C. To the right D. To the left E. None of the above 8. Which of the following is the equation of the circle with center (-4,7) and radius 9? A. (x +4)-+ () - 7) =9 B. (x - 4)' + () +7)= =81 C. (x - 4) + () +7)- =9 D. (x +4)- + (y - 7)2 = 81 E. None of the above 9. Give the center and the vertices of the ellipse (x -4)- + () + 3)- 16 25 = 1