Algebra Vocabulary

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Algebra Vocabulary

• SOL 6.23

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Coefficient

• A coefficient is the numerical factor in a term.
• Example in the term 4x, 4 is the coefficient.
• If the coefficient is not written, it is 1
• Example in the term d, 1 is the coefficient.

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1. Circle the coefficient

• 3x 4y 5a 7b a

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Variable

• A variable is a symbol (placeholder) used to
  represent an unknown number.
• Example in the term 4x, x is the variable

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2. Circle the variable

• 3x 4y 5a 7b a

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Term

• A term is a number, variable, product or quotient
  in an expression of sums and/or differences.
  Terms are separated with a or sign.
• Examples
• w 5 3w y/8

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How many terms are there?

• 7x2 5x - 3

There are 3 terms!
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3. Indicate the number of terms in each expression

• 2x 1 _____
• 3b _____
• 5a - 25 _____
• a/6 _____
• y/2 3 7 _____
• 4d 6 _____

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1
2
1
3
2
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Inverse Operations

• Inverse operations are operations which undo each
  other.
• 4. Examples
• Addition and _____________ are inverse operations
• Multiplication and _________ are inverse
  operations

Subtraction
Division
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Expressions

• An expression can be a term or a collection of
  terms separated by addition or subtraction signs.
• Expressions do not include an equal sign!
• Examples 2x 1
• 3y

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Equations

• An equation is a mathematical sentence stating
  that two expressions are equal.
• Example

2x 1
4

• The expressions are equal to one another.

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5. Expression or Equation?

1. 4d 6
2. 3x 6
3. 3b
4. a/6
5. y/2 3 7

Expression
Equation
Expression
Expression
Equation