Does the table represent an exponential function?

Question

x 1 2 3 4
y –1 –8 –27 –64, I think it does.

Answer 1

y = x^x ??
well the exponent is x but the base is not a constant. I would say it does not fit the definition form of
y = a * b^x
where a and b are constants

Answer 2

Your function:

y = - x³

- x³ isn't an exponential functionis.

- x³ is a power function.

Answer 3

sorry, I missed, y = -x^3