would this be right?  TOPIC_SOLVED

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would this be right?

Postby illuminati58 on Sun Jul 12, 2009 11:58 pm

Suppose you have a lemonade stand, and when you charge $1 per cup of lemonade you sell 50 cups. But when you raise your price to $2 you only sell 25 cups. Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups, and "P" for the price you charge. Assume the function is linear.


C = 50 x 1p and C = 25 x 2p
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Postby stapel_eliz on Wed Jul 15, 2009 8:13 pm

illuminati58 wrote:Suppose you have a lemonade stand, and when you charge $1 per cup of lemonade you sell 50 cups. But when you raise your price to $2 you only sell 25 cups. Write an equation for the number of cups you sell as a function of the price you charge. Denote "C" for number of cups, and "P" for the price you charge. Assume the function is linear.

C = 50 x 1p and C = 25 x 2p

I'm not sure what the above is meant to mean...?

Try plugging numbers in. If the price is P = 1, then what is C equal to? If the price is P = 2, then what is C equal to?

Given these two data points, (P, C), what is the slope of the line modelling C? What then is the line equation? :wink:
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