8/22 Lesson Combine like terms and vocabulary

a number that is multiplied by a variable

• expression

• constant

• coefficient

• variable

a mathematical sentence stating that two expressions are equal

• term

• coefficient

• equation

• variable

An expression...

• has an equal sign

• does NOT have an equal sign

An equation...

• has an equal sign

• does NOT have an equal sign

Which of the following is an equation?

• 4x

• 3y - 18 + x

• 4x + 2 = 5 - x

What is the vocabulary word for the -5 in this expression: -5y + 4?

• variable

• constant

• coefficient

• variable

• constant

• coefficient

9x + 8x

• 72x

• 1x

• 17x

• -1x

x + 1 + 3x

• 3x + 1

• 4x + 1

• 3x + 4

• 5x + 3

3 + 4x - 1

• 7x + 1

• 4x - 2

• 7x - 1

• 4x + 2