Graphing Inequalities

Question

When connecting the points of a line of an inequality, when do you use a solid line and when would you use a dotted or dashed line?

Answer 1

If the inequality symbol is < or >, use a dashed line, otherwise use solid. When you use a dashed line you are saying the points on that line are NOT values that are solutions of the inequality. When you use a solid line you are saying the points on the line ARE solutions to the inequality.