Applications of linear relationships

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Examples

Lessons

A waffle is sold for $5 in a coffee shop.
1. Write an equation relating the money that the coffee shop makes to the number of waffles they sell.
2. Create a table of values.
3. Graph the table of values.
Find y.
1. y=-x when x=13
2. y=2x-10 when x=8
3. y=-x+4 when x=12
The cost of 120 boxes of cookies is $1,080. Each box is sold for $12.
1. Write an equation for profit made in terms of number of boxes of cookies sold.
2. Create a table of values.
3. Graph the table of values.
4. How many boxes of cookies are sold if the profit is $60?
5. How many boxes of cookies need to be sold to break even?
6. What is profit if the cookies are sold out?

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