Answer
$y \geq -3x +3$
Work Step by Step
The slope of the line is $-3$ and the y-intercept is $3$, so the equation of the boundary line is $y = -3x +3$.
The boundary line is solid, so the inequality symbol is either $\leq$ or $\geq$.
Assume $y \leq -3x +3$ and test a point in the region to see whether it satisfies this equation. For example, test the point $(2, 3)$.
$3 \leq -3(2) +3$
$3 \leq -6$
This is not true. Therefore, the correct inequality is $y \geq -3x +3$
