Linear Expressions Review

Linear Expressions Review

Eureka Math, 8th Grade, Module 4, Lessons 1-3

Remember these terms?

• A linear expression is an expression that is equivalent to the sum or difference of one or more expressions where each expression is either a number, a variable, or a product of a number and a variable.

• A nonlinear expression in 𝑥 has terms where 𝑥 is raised to a power that is not 0 or 1.

Multiple Select

Which of the following are linear expressions? Select all that apply.

• 2x +5

• x² + 2x +2

• xy

• x -9

• 9 - 3mn

And these?

• A term is a single mathematical expression. It may be a single number (positive or negative), a single variable ( a letter ), several variables multiplied but never added or subtracted.

• A coefficient is a number used to multiply a variable.

Multiple Choice

What is the constant term of:
14 - 8x - 7y

• -8
• -7
• 14
• none

Multiple Choice

What are the terms of:
3x - 2y + 4

• 3x, 2y, 4
• 3x, -2y, 4
• 3x, -2y
• 3x, 2y

Multiple Choice

Which expression contains exactly 3 terms?

• 5 + 6xy
• 9 + 4t
• 8 + 2y - 5x
• 24xy

Multiple Choice

What is the coefficient of y?

4 - 2y

• 2

• 4

• -2

• 0

Multiple Choice

What is the coefficient of x?
9 - x

• 0
• 1
• -1
• 8

Multiple Choice

What is the coefficient of x?
8 + 5x - y

• 8
• 0
• 5
• -5

Multiple Choice

The sum of six and a number

• x + 6

• 6/x

• x + 4

• 6x

Multiple Choice

The quotient of a number and five

• y - 5

• y + 5

• y X 5

• y/5

Multiple Choice

Three times a number

• 3n

• 3/n

• 3+n

• 3-n

Multiple Choice

Ten less than a number

• 10n

• 10 - n

• n - 10

• 10/n

Multiple Choice

Three times a number increased by nine

• 3h-9
• 3(h-9)
• 3(h+9)
• 3h+9

Multiple Choice

Three times the difference of a number and seven

• 3x - 7

• 3(x - 7)

• 3(x + 7)

• 3(7) - y

Multiple Choice

The product of seven and a number increased by five

• 7+n+5
• 7/n+5
• 7n+5
• 7-n+5

Open Ended

Suppose a friend was absent from class today. What would you tell them we learned about? Be as detailed as possible.