Flashcard 4 - Math Flashcard Set for the PERT

Greater than, or less than (> or <) are graphed with open circles (meaning the number is not part of the solution).
Greater than or equal to, less than or equal to (≥or ≤) are graphed with closed or shaded circles (meaning the number is included in the solution).

When we graph, we make a visual representation of the inequality on the x and y axes. Points are labeled with the solved values for \((x, y)\). A point is represented by a tiny circle. An open circle (not shaded) means that the values of \((x, y)\) at that point are not part of the solution, but the values either less than or more than those values are included in the solution. A closed (shaded) tiny circle, on the other hand, means that the solution includes the values of x and y at that point.