What is used when graphing an inequality that uses one of these two symbols: ≤, ≥ ?

Since using ≤, ≥, it means that the lines are included, the line is graphed as a solid line. When you have plain > or <, the line is not included, so you use a dashed line.

He is right i did this thing before

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .