Variable: Is a quantity that can change or vary. Mathematicians use letters to represent variables. Constant: A quantity that does not change. 6 + 2x.

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Presentation transcript:

Variable: Is a quantity that can change or vary. Mathematicians use letters to represent variables. Constant: A quantity that does not change x Expression: Is a mathematical phrase involving constants, variables, and operation symbols.

Evaluate each expression for x=1, 2, and 3. xX

x11 – x Evaluate each expression for x=3, 4, and 5.

x4x Evaluate each expression for x=6, 7, and 8.

x12/x + 2x Evaluate each expression for x=2, 4, and 6.

xx² + 12x18/x Evaluate each expression for x=1, 2, and 3.

Evaluate each expression x= 3, 4, x x 3. 60/x 4. x + 23

Evaluate each expression for n = n – 9 2.(3n + 5n) x n/2

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