The function $f$ is defined by $f(x)=9x-308$. If the point $(k,2k)$ l…

Question

Prompt

The function

f

is defined by

f (x) = 9 x - 308

. If the point

(k, 2 k)

lies on the graph of

y = f (x)

in the

x y

-plane, where

k

is a constant, what is the value of

k