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Math·Algebra·Linear functions

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In the relationship between $x$ and $y$, each increase of 1 in the value of $x$ decreases the value of $y$ by $\frac{7}{2}$. When $x=-2$, $y=5$. Which equation represents this relationship?

A

$y=-\frac{7}{2}x-2$

B

$y=-\frac{7}{2}x+2$

C

$y=\frac{7}{2}x-2$

D

$y=\frac{7}{2}x+2$