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Big Ideas Math: Modeling Real Life, Grade 6
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Big Ideas Math: Modeling Real Life, Grade 6 View details
7. Writing and Graphing Inequalities
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Exercise 7 Page 385

Substitute 3 into the given inequality and then simplify.

No, see solution.

Practice makes perfect
We can determine whether 3 is a solution by substituting it into the inequality and simplifying.
10 ≤ 18 ÷ x
Substitute

x= 3

10 ? ≤ 18 ÷ 3
Div

Divide by 3

10 ≤ 6 *
Since 10 is not less than or equal to 6, we got a false statement. This means that x=3 is not a solution of the inequality.
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Try It 2 (Page 384)
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arrow_right Self-Assessment for Concepts & Skills p.386
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arrow_right Self-Assessment for Problem Solving p.387
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arrow_right Review & Refresh p.388
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arrow_right Concepts, Skills, & Problem Solving p.388-390
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