10 Points answer THREE Algebra 2 questions!

4. The center of a circle is at (4, -1) and it has a radius of 6. What is the equation of the circle?

A.) (x - 4)^2 + (y + 1)^2 = 6

B.) (x - 4)^2 + (y + 1)^2 = 36

C.) (x + 4)^2 + (y - 1)^2 = 6

D.) (x + 4)^2 + (y - 1)^2 = 36


8. What is the equation of the ellipse? http://i48.tinypic.com/21mrwnb.gif
A.) http://i46.tinypic.com/mh4poh.gif

B.) http://i48.tinypic.com/1zbyc1.gif

C.) http://i50.tinypic.com/f42oau.gif

D.) http://i47.tinypic.com/dhbxnm.gif


21. Which is the graph of (x + 4)^2 + (y - 1)^2 = 9?
A.) http://tinypic.com/r/2nlep94/6

B.) http://tinypic.com/r/34njmty/6

C.) http://tinypic.com/r/hu4tgj/6

D.) http://tinypic.com/r/34t8ps5/6


*Show your proof and/or explanation!

4. (x-4)^2+(y+1)^2=36....so B

8. ?

21. A (-4,1) R=3