Inequalities

Type an inequality and Desmos shades every point that makes it true. Where two shadings overlap is the solution region of the system.

Example: $y < 2x + 1$ and $y \ge -x + 4$. The darker overlapping area is where both hold.

• A dashed boundary line means the line itself is not included ($<$ or $>$). A solid line means it is ($\le$ or $\ge$).
• To test an answer choice like $(3, 2)$, add the point (3,2) and see whether it lands in the overlap.

On the test: for "which point is a solution to the system?", graph the system and plot each answer choice.