Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. 2. The graph of a linear inequality in two variables is the set of all points in.

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Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. 2. The graph of a linear inequality in two variables is the set of all points in a coordinate plane that are ? of the inequality. ANSWER solutions 1. The linear inequality that represents the graph shown at the right is ?. ANSWER y < – x

Prerequisite Skills SKILL CHECK Graph the equation. 3. x + y = 4 4. y = 3x – 3 5. –2x + 3y = –12 ANSWER

Prerequisite Skills SKILL CHECK Solve the equation. 6. 2x – 12 = –3x –7 = –2x + 5 = 2x – 5 ANSWER 14 ANSWER – ANSWER 2 1 2

Prerequisite Skills SKILL CHECK Graph the inequality in a coordinate plane. 9. y ≥ –x x + 4y < – x + 5y > –5 ANSWER