1.Is each number a solution of x > –1? a. 3b. –5 2.Is 2 a solution of 3x – 4 < 2? 3.Graph x > 4. yesno Math on the Mind.

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Lesson 1-5 Solving Inequalities September Objective:

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1.Is each number a solution of x > –1? a. 3b. –5 2.Is 2 a solution of 3x – 4 < 2? 3.Graph x > 4. yesno Math on the Mind

Solving One-Step Inequalities Addition and Subtraction Unit 6 Lesson 2 hrsbstaff.ednet.ns.ca/matkins/.../PowerPoints/6.1%20Inequalities.ppt

Let’s Review the Inequality Symbols: s/inequalities/preview.wemlhttp:// s/inequalities/preview.weml

Solving an Inequality Solving an inequality is a lot like solving an equation. Isolate the variable on one side using inverse operations. Solve: +3 x < 8 hrsbstaff.ednet.ns.ca/matkins/.../PowerPoints/6.1%20Inequalities.ppt

Solving an Inequality -6 hrsbstaff.ednet.ns.ca/matkins/.../PowerPoints/6.1%20Inequalities.ppt

p – 4 < 1 p < 5 Solve p – 4 < 1. Graph the solution Add 4 to each side.

8  d – 2 10  dSimplify. Solve 8  d – 2. Graph your solution Add 2 to each side.

k > –5 –3 k +3 > –2 Solve and graph. –5 0

r  r – 9  Solve and graph.

u  u – 5  Solve and graph.

c  –4 –6 c + 6  2 04 –7 –4 Solve and graph.

In order to receive a B in your literature class, you must earn more than 350 points of reading credits. Last week you earned 120 points. This week you earned 90 points. How many more points must you earn to receive a B? Define: Let = the number of points needed. p Write: p > p > 350Combine like terms. – 210 – 210Subtract You must earn 141 more points. p > 140Simplify.

Which statement can be modeled by x + 3  12? A.Sam has 3 bottles of water. Together, Sam and Dave have at most 12 bottles of water. B.Jennie sold 3 cookbooks. To earn a prize, Jennie must sell at least 12 cookbooks. C.Peter has 2 baseball hats. Peter and his brothers have fewer than 12 baseball hats. D.Kathy swam 3 laps in the pool this week. She must swim more than 12 laps.

Your brother has $2,000 saved for a vacation. His airplane ticket is $637. Write and solve an inequality to find out how much he can spend for everything else.

Your local bank offers free checking for accounts with a balance of at least $500. Suppose you have a balance of $ and you write a check for $ How much do you need to deposit to avoid being charged a service fee?