How do you model relationships with variables and equations?

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Presentation transcript:

How do you model relationships with variables and equations? Section 1-1 How do you model relationships with variables and equations?

Vocabulary Variable- Algebraic Expression- a symbol, usually a letter, that represents one or more numbers a mathematical phrase that can include numbers, variables, and operation symbols.

Vocab cont. a mathematical sentence that uses an equal sign Equation- Open Sentence- an equation that contains one or more variables

Examples Write an algebraic expression for each phrase: Seven more than n The quotient of n and 9 7 less than twice a number n

Examples iTunes sells albums for $9.95 each. Write an equation that best represents the cost (c) of a given number (n) of albums?