Evaluating Expressions. S.W.B.A.T  Use the order of operations to evaluate expressions with variables and expressions with numbers.

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Presentation transcript:

Evaluating Expressions

S.W.B.A.T  Use the order of operations to evaluate expressions with variables and expressions with numbers

Brief Review  Variable  An unknown number  Examples x, y, z  Coefficient  The number in front of the variable  Examples: 2x, 6y, 4z

Evaluating Expressions?  What does this mean?  When we substitute a specific value for each variable, and then perform the operations  Lets evaluate the expression 3y +2y when y = 5  3 ( 5 ) + 2 ( 5 )   25

Practice  Work on the problems on the worksheet with a partner  If you have any questions, ask them!