7th Grade Math Unit 7 Lesson 2 Practice

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or equal to the other. Examples include <, >, ≤, and ≥.

Front

How do you represent a situation where a person has less than a certain amount of money?

Back

You can represent this situation using an inequality. For example, if Jodi has earned $15 per hour and spent $35 on gas, the inequality would be: 15x - 35 < 25.

Front

What does the inequality 15x - 35 < 25 represent?

Back

It represents the situation where Jodi's earnings after spending on gas are less than $25.

Front

How do you solve the inequality 5x - 7 ≥ 8?

Back

To solve, add 7 to both sides: 5x ≥ 15. Then divide by 5: x ≥ 3.

Front

Back

The solution indicates that y can take any value less than 66.

Front

What does the inequality 22.50 + x > 32 represent?

Back

It represents that Samantha's total money after receiving some for cleaning is greater than $32.

Front

Back

Front

What is the meaning of the symbol < in inequalities?

Back

The symbol < means 'less than'. For example, x < 5 means x is any number less than 5.

Front

What does the symbol ≥ mean in inequalities?

Back

The symbol ≥ means 'greater than or equal to'. For example, x ≥ 3 means x is any number greater than or equal to 3.

Front

How do you express that a variable x is greater than 25?

Back

You express it as the inequality x > 25.