Algebraic Expressions with Variables

The video tutorial explains how to convert verbal phrases into algebraic expressions using a variable X to represent a number. It covers two examples: 'seven more than a number' is expressed as 'x + 7', and 'four less than a number' is expressed as 'x - 4'. The tutorial emphasizes understanding the operations needed to translate these phrases into mathematical expressions.

How would you express 'seven more than a number' using the variable X?

• X - 7

• 7X

• X + 7

• X / 7

If X represents a number, what does the expression X + 7 signify?

• A number divided by seven

• Seven less than a number

• Seven times a number

• Seven more than a number

What is the algebraic expression for 'four less than a number' using X?

• 4X

• X / 4

• X + 4

• X - 4

Which of the following represents 'four less than a number'?

• 4X

• X - 4

• 4 - X

• X + 4

If X is a number, what does the expression X - 4 represent?

• Four more than a number

• Four times a number

• Four less than a number

• A number divided by four