Unit 7 INEQUALITIES

You need to score at least an 80 on a test to stay on the Honor Roll. Each question is worth 4 points. Write an inequality to find out how many questions must be answered correctly in order to stay on the Honor Roll.

Write an inequality that represents the value of x:

The perimeter is greater than 35 inches.

• x - 27 > 30

• x - 30 > 27

• x + 27 > 35

• x + 35 > 27

Solve:

-6w > 72

• w < -432

• w > 78

• w > -12

• w < -12

Which description is the correct way to solve this inequality:

-13x - 5 < -31

• Subtract 5 from both sides, then divide both sides by -13

• Add 5 to both sides, then divide both sides by -13

• Add 5 to both sides, then multiply both sides by -13

• Subtract 5 from both sides, then multiply both sides by -13

Which graph matches the inequality?

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Which graph matches the inequality?

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When do you use a closed circle on a graph for an inequality?

• When it is ≥ or ≤

• When it is > or <

• When the number in front of the variable is negative

• When it is only =

Write the inequality: 
The Chicago Cubs have won more than 100 games.

• x > 100
• x < 100
• x ≥ 100
• x ≤ 100

When graphing b< 6 would you use an open or closed circle?

• Open
• closed

When graphing an inequality, what does a closed circle mean?

• The number is not included in the list of answers.
• The number is included in the list of answers.