The function $f$ is defined by $f(x) = -13(5)^x + \frac{1}{k}$, where…

Question

Prompt

The function

f

is defined by

f (x) = - 13 (5)^{x} + \frac{1}{k}

, where

k

is a constant. If

y = f (x)

is graphed in the

x y

-plane, what is the

y

-coordinate of the

y

-intercept of the graph?

- 13

\frac{1 - 13 k}{k}

\frac{1}{k}

\frac{1 - k}{k}