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Topic: Expressions

Notes. Topic: Expressions Objective: To solve algebraic expressions when a value is given for the variables. Definitions. Expression : a mathematical statement Equation : a mathematical sentence that contains an equal sign Inequality : a mathematical sentence that contains a < or > sign.

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Topic: Expressions

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  1. Notes Topic: Expressions Objective: To solve algebraic expressions when a value is given for the variables

  2. Definitions Expression: a mathematical statement Equation: a mathematical sentence that contains an equal sign Inequality: a mathematical sentence that contains a < or > sign

  3. Definitions Term: a number, variable or the product or quotient of a number and a variable Constant: a term without a variable

  4. Definitions Variable: a letter that represents an unknown number Coefficient: a number multiplied by a variable

  5. Vocab 3x – 6y + 18 + 30 How many terms? What are the variables? What are the coefficients? What are the constants?

  6. Vocab y+ 3x – 2 – k + 7 How many terms? What are the variables? What are the coefficients? What are the constants?

  7. Solving Expressions m = 7 and k =2 6m – 3k

  8. Plug and Chug • Solve the following if • x = 7 y = -3 and z = 9 • 1) 4z – 3y • 2) 7z – (y + x) • 3) 2x + (4z – 13) - 5

  9. Plug and Chug • Solve the following if • w = 4 x= 5and y = -1 • 1) -4 (wy + 3x) • 2) (w + x) ÷ ( w + y) • 3) y2- x3

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