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For Educational Use Only © 2010 Benchmark 12 I can complete an in/out or x/y table when given a rule

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For Educational Use Only © 2010 Lesson Objectives 1) Complete an in/out or x/y table of values when given an equation or rule. 2) Understand the domain and range of a function.

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For Educational Use Only © 2010 # of Dvd’s Total cost 1 25 23546 1) Costco is running a sale on dvd’s. The sale says buy one dvd at $25 and buy any additional dvd’s at $10 each. Example 3545556575

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For Educational Use Only © 2010 2) The per pound cost for sliced fruit platters is $1.50. Fill the table in for the price per pound. Platter lbs Price 1 lb $1.50$3.00$4.50$6.00$7.50 2 lb3 lb5 lb4 lb Example

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For Educational Use Only © 2010 Domain and Range The collection of all x values is called the _______ of the function. The collection of all y values is called the _______ of the function. Domain Range

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For Educational Use Only © 2010 3) Fill in the table for y = – 2 + 3x x y-8 -2210 y = – 2 + 3x y = – 2 + 3(-2) y = – 2 + (-6) y = -8 Example -5-214 Domain Range

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For Educational Use Only © 2010 4) Determine if (3, 7) is a solution for y = x + 4. Example Ask yourself does that solution work by plugging in both numbers: 7 = 3 + 4 7 = 7 True

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For Educational Use Only © 2010 Example 5) Fill in the table & graph the equation. y = 7 – 2x x y11 -2210 y = 7 – 2 x 3 9 75 Plug the x value from the table into the equation and solve for y. Domain Range

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For Educational Use Only © 2010 REMEMBER!!! Domain is for the ____ values. Range is for the _____ values. x y

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