The equation y = a^x is a decreasing function a =

Question

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!!!

Answer 1

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 ...

Answer 2

Thanks for your help!!! :)