Writing Inequalities from Real-World Scenarios

The video tutorial explains how to write inequalities to represent real-world situations. It covers two examples: the minimum age requirement for driving and the height requirement for riding a roller coaster. The tutorial highlights key terms like 'at least' and 'more than' to determine the appropriate inequality symbols. It also provides practice problems for viewers to apply their understanding.

What is the first step in writing an inequality for a real-world situation?

• Identify the variable

• Look for key words

• Determine the numbers involved

• Choose the inequality sign

Which key term indicates that a value must be at least a certain number?

• More than

• At least

• Less than

• Equal to

If a person must be at least 16 years old to drive, which inequality sign should be used?

• Less than

• Less than or equal to

• Greater than or equal to

• Greater than

What variable is used to represent age in the inequality for driving?

• h

• y

• x

• a

What is the inequality for a person who must be at least 16 years old to drive?

• a > 16

• a <= 16

• a < 16

• a >= 16

Which key term indicates that a value must be more than a certain number?

• At least

• Less than

• More than

• Equal to

If a person must be more than 48 inches to ride a roller coaster, which inequality sign should be used?

• Less than

• Greater than or equal to

• Greater than

• Less than or equal to

What variable is used to represent height in the inequality for riding a roller coaster?

• x

• y

• a

• h

What is the inequality for a person who must be more than 48 inches tall to ride a roller coaster?

• h > 48

• h >= 48

• h <= 48

• h < 48

If the inequality is s < 20, what does the variable s represent?

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