Linear Expressions

What is/are the coefficient(s) of
 2x + 9 + 7x?

• 2, 9, 7
• 2, 7
• 2x, 7x
• 9

Simplify by combining like terms:
5a + 2b - 3a + 4

• 8a + 2b + 4
• 2a + 2b + 4
• 8ab
• 4ab + 4

2r + 2 + 5r - 2 + r 

• 8r 
• 8r - 4 
• 12r 
• 7r + 4 + r 

Simplify the following expression:

9x + 5(x + 3)

• 9x + 15

• 45x + 27

• 14x + 42

• 14x + 15

Simplify the expression: 2(x + 4) + 3(2x - 5)

• 8x - 7
• 8x + 4
• 5x + 23
• -5x + 20

What is the "2" called
 in the following term
   "2x"

• Variable Term
• Variable
• Constant
• Coefficient

How many terms are in the algebraic expression?

2y + x + 4

• 4

• 3

• 5

• 2

Identify a constant in the expression
3x + 2y + 7

• 3
• 2y
• 7
• 2

Identify the variables in the expression
3x +  9

• x
• y
• 9
• 3x

Translate this phrase into an algebraic expression.

8 less than the product of 4 and a number

Use the variable m to represent the unknown number.

• 8 − 4m

• 8m − 4

• 8m + 4

• 4m − 8