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Problem and Variable PowerPoint PPT Presentation

Problem and Variable. By: Libby Northam Mrs.Klar-7 9-20-10. Problem:. Margret and Monica went to the store to buy brownies. The brownies cost \$10 each package, they bought 2 packages. Equation:. X = Number of packages Y = The total cost Y=10x or f(x)=10x. Independent and Dependent.

Problem and Variable

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Problem and Variable

By: Libby NorthamMrs.Klar-7

9-20-10

Problem:

• Margret and Monica went to the store to buy brownies. The brownies cost \$10 each package, they bought 2 packages.

Equation:

X = Number of packages

Y = The total cost

Y=10x or f(x)=10x

Independent and Dependent

• Independent- number of packages

• Dependent- the total cost

We know that Y depends on X.

So the total cost depends on the number of packages.

Function or not

• The data is a function because no “X” values repeat.

Domain and Range

• Domain- all the “X” values in the data

• Range- all the “Y” values in the data

D:{1,2,3,4,5}

R:{10,20,30,40,50}

Discrete or continuous

• The data is continuous because it is not a line it is points.

The total cost

Soooo…

• The total cost is depending on the number of packages that Margret and Monica buy \$10 a pack. If the buy 2 packages than the spend \$20.

Thank you for watching! 