Answer
$(-3,0)$
$(1,3)$
$(9,9)$
Work Step by Step
$9=-3x+4y$
$y=0$
$9=-3x+4(0)$
$9=-3x$
$x=-3$
$y=3$
$9=-3x+4(3)$
$9=-3x+12$
$-3=-3x$
$x=1$
$x=9$
$9=-3(9)+4y$
$9=-27+4y$
$36=4y$
$y=9$
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