Mr. Vizza's Class

Solving "OR" Inequalities


Steps

Examples Done by Mr. Vizza

Problems You Should Try

Additional Supportive Links


Steps

 

Step 1 Solve each inequalitiy individually using the DC01* method
Step 2 Graph each inequality's solution individually under the number line.
Step 3 Using, two vertical lines, split the two graphs by there endpoints into three sections.  Label the true and false areas with T's and F's.
Step 4 If a section has one T include it in the final answer.

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Examples Done by Mr. Vizza

   Directions:  Please solve and graph the following inequality. If there is no solution, please state, "No Solution". Also, graph the solution set.

2(a-6)-4<-12      OR     -2a-6-8a<-36

Step 1

D 2a-12-4<-12 OR (no distribute needed)
C 2a-16<-12 OR -10a-6<-36
0 2a<4 OR -10a<-30
1* a<2 OR a>3
      (Here you must flip the symbol because we divide by -10.)

 

Step 2

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Step 3

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Step 4

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Problems You Should Try

 

Directions:  Please solve the following inequalities.  If there is no solution, please state, "No Solution". Also, graph the solution set.

1. 4x<-12 OR 3x-6>9
2. 3(a+3)<-12 OR -2a<-20
3. 2c+6+6c>22 OR 3(2x+4)<36
4. y-6-5y<18 OR -y>-40
5. 2(3b+2-b)<-2 OR 10b>50
6. 2y+3<-9 OR 6y+5>23
7. 6-2z+8z<42 OR 3z-1/2<18.5
8. 4b-4>17-3b OR 7b-(4-2b)>32
9. 8c<-64 OR c+2<0
10. 4(x+3)<12x-8 OR 3x-15<45

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Additional Supportive Links

 

 

©2004 Thomas Vizza