Answer
$f(x)=2x-4$
Work Step by Step
To find your slope, take the two visible points on your graph and use them.
$(2,0), (0,-4)$
$\frac{-4-0}{0-2}$ = $2$
From there you will have $f(x) = 2x+b$
Plug in one of the two points.
$b=-4$
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