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Posted by **Jessie** on Friday, January 7, 2011 at 7:19pm.

possible answers:

1/4y

4y

y/4

4

I really don't get these- but I think it might be y/4 because you take the negative to the top and the negative to the bottom, right?

- Algebra -Please check -
**Reiny**, Friday, January 7, 2011 at 7:35pmremember that x^(-a) = 1/x^a

and a^0 - 1 for all a>0

4^-1x^0/y^-1

= (1/4)(x^0)(1/y)

= (1/4)(1)(1/y)

= 1/(4y)

(they should not have written the answer as 1/4y , it would mean (1/4) y )

- Algebra -Please check -
**Jessie**, Friday, January 7, 2011 at 7:44pmThe way you explained it, I can understand it-the way my teacher explained it-I was still confused

Thank you very much

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