Expressions

Simplify the expression:

-2x + 4 + 6x - 7

Which expressions are equivalent to: 3x + 4?

a. 2x + 2 -2x + 3x

b. 6 + 2(x - 1) + x

c. 3(x + 4 - 2) - 2

d. - 2x + 1 - x - 2 + 5

• b and d

• a, c, d

• b and c

• None of the above

What is the main difference between a mathematical expression and an equation?

• An equation does NOT contain an equal sign, but an expression does have an equal sign.

• An expression does NOT contain an equal sign, but an equation does have an equal sign.

• A mathematical expression tells you how to feel, but an equation tells you how to solve.

• There is no difference.

When simplifying an expression, what is the name of the property that we use when multiplying a number on the outside of the parentheses by everything inside the parentheses?

• Multiplication

• Factoring

• Distribution

• Combining Like Terms

What are the like terms that you can combine to simplify in the following expression?

-3x + x - 5 - 2 + 2x

• -3x + x + 2x

  and

  - 5 - 2

• -3x + x + 2x

  and

  5 - 2

• 3x - 5 -2

  and

  x + 2x

• 3x + x + 2x

  and

  5 + 2

In the expression 3p + 4, what is the word for the number 3?

• term

• coefficient

• product

• sum

Which phrase describes this expression?

6y + 4

• 6 times the sum of y and 4

• The product of 6 and 4 times y

• 4 more than the sum of 6 and y

• The product of 6 and y plus 4

In the expression 3p + 4, what is the word for the letter p?

• term

• coefficient

• product

• variable

What are the constants in the expression?
-4x + 6y - 2

• -4x, 6y, -2
• x, y
• 4x, 6y
• -2

What are the terms in the expression?
4 + 16v

• 4, 16v
• 4
• v
• +16