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Math·Algebra·Linear functions

hard

$x$	$y$
$-12$	$44$
$a$	$14$
$2$	$b$

The table shows three values of $x$ and their corresponding values of $y$. There is a linear relationship between $x$ and $y$, and the $y$-intercept is $(0,-16)$. What is the value of $a+b$?

A

-32

B

-31

C

-22

D

-7