Showing solutions to linear inequalities graphically with appropriate shading and border designations and testing possible solution points algebraically. Solving word problems that can be modeled by a linear inequality.
Mapped to CCSS Section# HSA.REI.D.10, HSA.REI.D.12
Understand that the graph of an equation in two variables is the set of all its solutions plotted in the coordinate plane, often forming a curve (which could be a line). Graph the solutions to a linear inequality in two variables as a half-plane (excluding the boundary in the case of a strict inequality), and graph the solution set to a system of linear inequalities in two variables as the intersection of the corresponding half-planes.
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