Algebraic phrases to expressions using increased by a number increased by 9

The video tutorial explains how to determine the correct mathematical operation to increase a number by 9. It discusses why addition is the appropriate choice over subtraction, multiplication, or division. The tutorial introduces the use of variables in algebra, using 'P' to represent an unknown number, and demonstrates how to express the increase as 'P + 9'.

What operations can be performed to increase a number?

• Add

• Subtract

• Multiply

• Divide

Why can't you subtract or divide when trying to increase a number?

• It makes the number smaller

• It doesn't change the number

• It can lead to negative numbers

• None of the above

Explain the difference between adding 9 and multiplying by 9 in terms of increasing a number.

What does the variable P represent in the context of the text?

• A constant

• A number

• An operation

• An equation

How is the expression for a number increased by 9 represented using a variable?

• P + 9

• 9 + P

• P - 9

• P * 9