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Monday, November 8 Make sure your name is on your homework and it is complete (Pr. 3-2) Fill in Agenda Practice 3-3 Bell Work

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EXAMPLE A Multiply by a Positive Number Solve. Then graph the solution.

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EXAMPLE B Divide by a Positive Number Solve: 4x > 20 Then graph the solution.

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Solve the inequality. Then graph the solution Checkpoint Multiply or Divide by a Positive Number. 1. 2. 18 2k 4. -21 3y 3. 6 <

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Consider 4 > 1

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PROPERTIES OF INEQUALITY Multiplication Property of Inequality (c < 0) For all real numbers a, b, and for c < 0: If a > b, then ac < bc If a bc Division Property of Inequality (c < 0) For all real numbers a, b, and c < 0: If a > b, then a ÷ c < b ÷ c If a b ÷ c

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Things to remember about Multiplying and Dividing Inequalities! Dividing both sides of an inequality by a POSITIVE number and the inequality stays the same. Dividing both sides of an inequality by a NEGATIVE number and the inequality flips and faces the other way. Multiply both sides of an inequality by a POSITIVE number and the inequality stays the same. Multiply both sides of an inequality by a NEGATIVE number and the inequality flips and faces the other way.

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EXAMPLE C Multiply by a Negative Number Solve. Then graph the solution.

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EXAMPLE D Divide by a Negative Number Solve. Then graph the solution.

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Solve the inequality. Then graph the solution 1. 2.

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Solve the inequality. Then graph the solution 4. 12 > -5n 3.

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