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Posted by **Vince** on Tuesday, June 7, 2011 at 2:39pm.

- EASY MATH -
**Reiny**, Tuesday, June 7, 2011 at 3:00pmdistance from centre (-5,-3) to vertex (-5,-1) is 2

so a = 2

distance from (-5,-3) to (1,-3) is 6,

so b=6

equation:

(x+5)^2 / 4 - (y+3)^2 / 36 = -1

- THANK YOU REINY! -
**Vince**, Tuesday, June 7, 2011 at 3:12pm:-)

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