Quick Review-Inequalties

What does an open circle on a number line mean?

• The variable cannot equal the value.

• The variable can equal the value.

• The variable is greater than the value.

• The variable is less than the value.

What symbol is used when a variable can be equal to a value?

• Square

• Triangle

• Closed circle

• Open circle

If water freezes at 32 degrees Fahrenheit, what inequality represents the temperature at which ice won't melt?

• x ≥ 32

• x > 32

• x ≤ 32

• x < 32

What does shading to the left on a number line indicate?

• Values not equal to the number

• Values equal to the number

• Values less than the number

• Values greater than the number

What is the inequality for a temperature that must be 32 degrees or colder?

• x ≤ 32

• x ≥ 32

• x < 32

• x > 32