Answer
$-3\leq x$
Work Step by Step
$-7\leq\frac{7}{3}x\longrightarrow$ multiply both sides by $\frac{3}{7}$
$-7\times\frac{3}{7}\leq\frac{7}{3}x\times\frac{3}{7}\longrightarrow$ multiply
$-3\leq x$
Check the endpoint
$-7\overset?=\frac{7}{3}(-3)$
$-7=-7\checkmark$
Check the inequaity
$-7\overset?\leq\frac{7}{3}(0)$
$-7\leq0\checkmark$
Since -3 is included in the solution, the endpoint on the graph is a solid circle.
