# 3.02 Notebook - Variables.doc - Unit 3 Lesson 2 Variables...

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Unit 3 Lesson 2: VariablesSeptember 23, 2019VocabVariable: Typically, a function y = f (x) involves two variables, y and x, representing respectively the value and the argument of the function.Term: Is defined as a number, variable or number-variable combination in an algebraic expression or equation.Coefficient: A coefficient is a constant term related to the properties of a product. In the equation that measures friction, for example, the number that always stays the same is the coefficient.Constant: It may be a number on its own or a letter that stands for a fixed number in an equation.Variable Expression: A mathematical expression that serves as a placeholder for any of a specified set of values.Evaluate: Finding or calculating the value of something.What do you think?1)2)3)4)Rules to Evaluate an Expression1.Plug in the value for the variable or variables.2.Follow the order of operations to solve. 3.SimplifyOrder of operations – PEMDAS1. Do any calculations inside the Parentheses or brackets.
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