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Posted by jess on Monday, March 9, 2009 at 7:11pm.

The equation y = a^x is a decreasing function a = 1) 1 2) 2 3) -3 4) .25 I think that the correct answer is 3) -3...but I am not sure why? Can anyone please check if I am right and explain why? Please....Thank you for your help!!!

In y = ax^2 , the parabola opens upwards for a positive value of a and it opens downwards for a negative value of a so have confidence in your answer since ...

Thanks for your help!!! :)

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