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Math·Algebra·Linear functions

hard

x	g(x)
−15	3
−6	0
9	5

The table shows three values of $x$ and their corresponding values of $g(x)$, where $g(x)=\frac{f(x)}{x+3}$ and $f$ is a linear function. What is the y-intercept of the graph of $y=f(x)$ in the xy-plane?

A

(0, -6)

B

(0, 4)

C

(0, 12)

D

(0, 24)