For the linear function $f$, the graph of $y=f(x)$ in the $xy$-plane …

Question

Prompt

For the linear function

f

, the graph of

y = f (x)

in the

x y

-plane has a slope of

28

and passes through the point

(0, 0)

. The function

f

is defined by

f (x) = a x

, where

a

is a constant. What is the value of

a