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Math (Check)

posted by on .

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!!!

  • Math (Check) - ,

    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 ...

  • Math (Check) - ,

    Thanks for your help!!! :)

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