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Math·Algebra·Linear functions

easy

For the linear function $f$, the graph of $y=f(x)$ in the $xy$-plane has a slope of $\frac{1}{3}$ and passes through the point $(0,7)$. Which equation defines $f$?

A

$f(x)=\frac{1}{3}x+7$

B

$f(x)=\frac{1}{3}x+\frac{1}{7}$

C

$f(x)=\frac{1}{3}x-\frac{7}{3}$

D

$f(x)=\frac{1}{3}x-7$