Question

What of the following exponential functions is represented by the data in the table?

A) f(x)=(1/3)^3
B) f(x)=3^x
C) f(x)=x^3
D) f(x)=x1/3

Answer 1

f(x)=(1/3)^x

Explanation:

Plug in the given values of x in the function above and match the answers with f(x) which is y.

Answer 2

f(x) = ( 1/3) ^ (x)

Explanation:

The function is

f(x) = (1/3) ^ (x)

When x = 1 f(x) = 1/3

when x=2 f(x) = 1/9

When x = -1 f(x) = ( 1/3) ^ -1 = 3/1 =3