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1.5 - Solve Linear Inequalities

1.5 - Solve Linear Inequalities

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•

Mathematics

•

8th - 11th Grade

•

Hard

Created by

Steve Dull

Used 1+ times

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4 Slides • 4 Questions

1

1.5 - Solve Linear Inequalities

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2

If you can solve equations, you already know 95% of what you need to know to solve inequalities.

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The properties of equality are true for inequalities, with one main difference

  • If you multiply both sides of the inequality by the same negative number, you must reverse the inequality symbol

  • If you divide both sides of the inequality by the same negative number, you must reverse the inequality symbol

4

Example:

 9x+4<12x−119x+4<12x-11  
 −12x       −12x-12x\ \ \ \ \ \ \ -12x  
 −3x+4<−11-3x+4<-11  
          −4      −4\ \ \ \ \ \ \ \ \ -4\ \ \ \ \ \ -4  
 −3x<−15-3x<-15  
 −3x−3  >−15−3\frac{-3x}{-3}\ \ >\frac{-15}{-3}  
      x >5 \ \ \ \ \ x\ >5\   

5

Multiple Choice

Solve

 x+8≥4x+17x+8\ge4x+17  

1

 −3≥x-3\ge x  

2

 −3≤x-3\le x  

3

 3≥x3\ge x  

4

 3≤x3\le x  

6

Multiple Choice

Question image

The solution to which inequality is represented by this graph?

1

5x+3<3x+95x+3<3x+9

2

x4≥12\frac{x}{4}\ge12

3

5x+3>3x+95x+3>3x+9

4

3x<−93x<-9

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Open Ended

Solve the inequality:

 −3x+8≤14-3x+8\le14  

8

Open Ended

Write a two-step inequality that has a solution of

 x<4x<4  

pattern-tertiary

1.5 - Solve Linear Inequalities

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