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Chapter 6.1 Solving Inequalities Using Addition and Subtraction Mr. Beltz & Mr. Sparks P.323 • Goal: Solve and graph one-step inequalities in one variable using addition or subtraction. Refresher < Less than Greater than > < Less than or equal to Greater than or equal to > • Graph of an Inequality: in one variable is the set of points on a number line that represents all the solutions of the inequality. – If the endpoint on the graph is a solution, draw a solid dot. (< >) – If the endpoint on the graph is NOT a solution, draw an open dot. (< >) Graph an Inequality in One Variable a) x < 2 All real numbers less than 2 b) a > -2 All real numbers greater than -2 c) z < 1 All real numbers less than or equal to 1 d) d > 0 All real numbers greater than or equal to 0 Using Subtraction to Solve an Inequality Solve x+5>3 x+5>3 -5 -5 x > 3 -5 x > -2 Using Addition to Solve an Inequality • Solve -2 > n – 4 +4 + 4 -2 + 4 > n 2>n Practice • p.323-325 #1-10