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Bell Work10/15/14 s olve and graph. 1. a + 4 > 16 2. 15 < x – 3 3. -9v < -108 4. 208 < -13x
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3-4 Solving Multi-Step Inequalities Objective: To solve inequalities involving more than one operation
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2 Times you flip the inequality 1. Move variable to the left 2. Multiply or divide by a negative number
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Examples - watch & work with me Solve the inequalities the SAME WAY you solved equations.
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Example 3 x < 2x – 15 3 3x < 2x – 15 -2x -2x x < -15 (3)
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You Try: 1. -3 > -3t + 6 2. 26p – 20 > 14p + 64 3..
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2 Special Cases 1. No Solutions 1. A false statement 2. All Real Solutions 1. A true statement
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Special Case #1 3x + 4 > 2(x + 3) + x 3x + 4 > 2x + 6 + x 3x + 4 > 3x + 6 -3x -3x 4 > 6 Distribute Combine like terms Get variable on same side True or false? This state is FALSE: No Solution
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Special Case #2 3 – 3(y – 2) < 13 – 3(y – 6) 3 – 3y + 6 < 13 – 3y + 18 -3y + 9 < -3y + 31 +3y + 3y 9 < 31 Distribute Combine like terms Get variable on same side True or false? This state is TRUE: All Numbers
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Define a variable, write an inequality, and solve. The sum of two consecutive even integers is greater than seventy-five. Name 2 consecutive even integers that meet the requirement.
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Homework Quiz Tomorrow! Sections 3.1 – 3.4
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GAME TIME! Speed… Whiteboard, eraser, marker. Pack up everything Sit quietly.
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Solve each inequality.
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PICK UP: Each of you are responsible for Whiteboard Eraser Marker REVIEW & STUDY for the quiz tomorrow!
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