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Math·Algebra·Linear inequalities in one or two variables

easy

The point $(9,3)$ in the $xy$-plane is a solution to which of the following systems of inequalities?

A

$x>0$
$y>0$

B

$x>0$
$y<0$

C

$x<0$
$y>0$

D

$x<0$
$y<0$