Expressions, Equations, and Inequalities

The video tutorial explains the differences between expressions, inequalities, and equations. Expressions are mathematical statements without equal signs, while inequalities use greater than or less than symbols. Equations are identified by the presence of an equal sign. Examples are provided for each type to clarify the distinctions.

What is a key feature that distinguishes an equation from other mathematical statements?

• It contains a variable.

• It has an equal sign.

• It uses a greater than symbol.

• It includes a constant term.

Which of the following is an example of an expression?

• 6 < 11

• 4y + 3 > 2

• 3a + 4

• 2x = 18

Expressions are characterized by the absence of which of the following?

• Operators

• Equal signs

• Variables

• Numbers

Which symbol is used in inequalities to show that one side is greater than the other?

• =

• <

• +

• >

What is the main difference between an equation and an inequality?

• An equation uses variables, while an inequality does not.

• An equation has an equal sign, while an inequality uses symbols like > or <.

• An equation is always true, while an inequality is not.

• An equation includes numbers, while an inequality does not.