Question

How do you find the exponential function f(x) = Ca^x whose graph has the given points. (2,0) and (2,2/9)?

Answer 1

The given points do not belong to a graph of a function. See explanation.

Explanation:

The given points have the same `x` coordinate. This means you are trying to define 2 different values `y_1=0` and `y_2=2/9` for the same argument `x=2`.

Note that a function like `y=Cxxa^x` can take the value of `0` if and only if `C=0` so the function becomes `y=0`