Which of the following equations represents a degenerate ellipse?

9x^2 +4y^2 = 1

x^2 y^2
---- + ---- = 2
14 19

x^2 y^2
----- = (-) ----
10 18

All of the above are degenerate ellipses.

Question

Which of the following equations represents a degenerate ellipse?
 
       9x^2 +4y^2 = 1
       
        x^2       y^2
        ---- +  ----  = 2
         14         19

         x^2            y^2
        ----- =  (-) ----
          10              18

        All of the above are degenerate ellipses.

anonymous · Answer

sooo i graphed this and that didnt work i still dont understand the only one that didnt come up was the last equation