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Review: Independent variable- the x coordinate, the input (time will always be the independent) Dependent variable- the y coordinate, the output (need the x value to determine) 1.) A woman who wears a size 8 shoe has a foot that is 10 inches long. A woman who wears a size 4 shoe has a foot that is 5 inches long. Name the independent variable and the dependent variable. Then write two ordered pairs. 2.) A 5 minute overseas call to Paris costs $4.50. A ten minute overseas call to Paris costs $8.50. Predicting Using Graphs

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Elaine is saving $12 a week to buy a new stereo. After 6 weeks, she has $97 saved. (w,m) a). independent variable: b). dependent variable: c). slope (rate of change): d). y-intercept: e). Write the equation of the line: f). How much money will she have saved after 10 weeks? g.) What does the y-intercept represent? What does the slope represent?

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A linear equation can be used to describe the length of a spring, y, when it is stretched by weight, x. A spring is 2 cm long when a 14-g weight is attached and 5 cm long when a 20-g weight is attached. a). independent variable: b). dependent variable: c). slope:(write two points to help) d). y-intercept: e). equation of the line: f). How long is the spring when a 16-g weight is attached?

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A woman who wears a size 8 shoe has a foot that is 10 inches long. A woman who wears a size 4 shoe has a foot that is 5 inches long. a.) slope:(write two points to help) b). y-intercept: c). equation of the line: d.) How long is a foot that is a size 7 shoe?

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A 5 minute overseas call to Paris costs $4.50. A ten minute overseas call to Paris costs $8.50. a.) slope:(write two points to help) b). y-intercept: c). equation of the line: d.) How much does a 2 minute call to Paris cost? e.) What does the y-intercept represent? What does the slope represent?

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