4. Write an equation for the circle with center (4,- 4) and containing the point (1, 16) 5. Write an equation for the line tangent to the circle x"+ y" = 25 at the point (3, 4)\fGraph the equations in 4-5. Label all important parts (Radius or Vertex, Co-Vertex, and Foci) AND CIRCLE THEM IN YOUR WORK AND LABEL THEM ON THE GRAPH. 6. 2 + = 1 7. x + ( y - 2)' = 9