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Big Ideas Math: Modeling Real Life, Grade 7
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Big Ideas Math: Modeling Real Life, Grade 7 View details
4. Writing and Graphing Inequalities
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Exercise 22 Page 149

Substitute - 9 into the given inequality and then simplify.

Yes.

Practice makes perfect
We can determine whether - 9 is a solution by substituting it into the inequality and simplifying.
6 ≥ - 2/3s
Substitute

s= - 9

6 ? ≥ - 2/3( - 9)
MultNegNegOnePar

- a(- b)=a* b

6 ? ≥ 2/3* 9
MoveRightFacToNum

a/c* b = a* b/c

6 ? ≥ 2* 9/3
Multiply

Multiply

6 ? ≥ 18/3
CalcQuot

Calculate quotient

6 ? ≥ 6 ✓
Since 6 is equal to 6, - 9 is a solution.
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arrow_right Try It p.146-147
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Try It 2 (Page 146)
Try It 3 (Page 147)
Try It 4 (Page 147)
Try It 5 (Page 147)
arrow_right Self-Assessment for Concept & Skills p.147
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Self-Assessment for Concept & Skills 8 (Page 147)
Self-Assessment for Concept & Skills 9 (Page 147)
Self-Assessment for Concept & Skills 10 (Page 147)
arrow_right Self-Assessment for Problem Solving p.148
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arrow_right Review & Refresh p.149
Review & Refresh 1 (Page 149)
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arrow_right Concept, Skills, & Problem Solving p.149-150
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