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Math·Algebra·Linear functions

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$x$	$y$
$-6$	$n+142$
$-3$	$n+71$
$0$	$n$

The table shows three values of $x$ and their corresponding values of $y$, where $n$ is a constant, for the linear relationship between $x$ and $y$. What is the slope of the line that represents this relationship in the xy-plane?

A

$-\frac{71}{3}$

B

$-\frac{3}{71}$

C

$\frac{n+71}{-3}$

D

$\frac{2n-71}{3}$