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Published byJazmine Hutchins Modified over 2 years ago

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Warm Up

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Lesson 20, Graphing on a Coordinate Plane EXPRESSIONS AND EQUATIONS, FUNCTIONS

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Vocabulary

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Coordinate Plane The coordinate plane has four quadrants. The first quadrant contains all positive values The second quadrant contains negative x values and positive y values The third quadrant contains all negative values The fourth quadrant contains positive x values and negative y values

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Example

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Variables Independent variable : the variable whose value can be chosen Dependent variable : the variable whose value is determined by the value of another variable

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Example For each pair of variables, identify the independent variable and dependent variable. a. Number of traffic violations, cost of auto insurance b. Electric bill total, kilowatts of electricity used

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Equations and ordered pairs

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Example

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Correcting homework Be kind Write “C.B. _____________” with your name Hold questions until the end Make sure I get your score sheet so your assignment is not marked missing!

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Homework 1 st and 2 nd hour: Lesson 20 #1-30 3 rd hour: Lesson 19 #16-30 Test tomorrow! Don’t forget to study!

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